In rheumatoid arthritis and psoriasis patients, this antibody has

In rheumatoid arthritis and psoriasis patients, this antibody has been well-tolerated BGJ398 datasheet and beneficial effects on inflammation have been reported in early phase I/IIa studies (http://www.biotie.Com/en/recearch_and_development/inflammation/vap1_antibody). Development of orally dosed small molecular inhibitors for human use is also an attractive option. Several drugs inhibiting CD26 are already on the market

for type II diabetes. They block the ability of CD26 to degrade incretin, a gastrointestinal hormone that normally increases insulin secretion from the pancreas 67. Considering the broad spectrum of CD26 targets, including chemokines, it is of interest that the incidence of infections learn more is only minimally increased among the treated patients 68. The discovery of ectoenzymes has opened up completely new dimensions in the field of leukocyte trafficking and the extravasation process is acknowledged to be a considerably more complex process than originally appreciated. Ectoenzyme-deficient mice clearly show that conventional adhesion molecules and chemokines alone are insufficient to mediate normal extravasation of leukocytes from the blood into the tissues. Ectoenzymes have both enzyme-dependent and -independent roles in leukocyte traffic. As enzymes, they

are fast-acting, constantly regenerating molecules involved in the shedding and shaping of adhesion molecules and chemokines (CD26, CD38, ART 2, CD13, MT1-MMP, ADAM10 and ADAM17) and/or in the formation of end-products, which regulate endothelial cell permeability and expression of adhesion molecules (CD39, CD73, VAP-1). In addition, CD38, CD73 and VAP-1 also mediate direct enzymatic activity-independent binding between leukocytes and endothelium. Both animal studies and the first clinical trials have shown that they are also potential targets for designing new anti-inflammatory drugs. Although the spectrum of the inflammatory diseases currently targeted in clinical trials has been limited, the wide

expression of these ectoenzymes at sites of inflammation suggests that they may have therapeutic potential in other diseases as well. Moreover, these same molecules may potentially Methocarbamol be used as targets to manipulate trafficking of tumor-infiltrating leukocytes to boost anti-tumor immunity. Conflict of interest: SJ own stocks of BioTie Therapies. See related review: http://dx.doi.org/10.1002/eji.201142231 “
“Sepsis is a systemic inflammatory response to infection and a major cause of morbidity and mortality. Sildenafil (SLD) is a selective and potent inhibitor of cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase PDE5. We aimed to investigate the protective effects of sildenafil on caecal ligation and puncture (CLP)-induced sepsis in rats.

To the best of our knowledge, this is the first report demonstrat

To the best of our knowledge, this is the first report demonstrating that a functional polymorphism in the DNMT1 gene is related to methylation levels of DNA. In addition, The DNMT1+32204GG genotype was observed to be more frequent in patients with intractable GD than in those with GD in remission (Table 3). This indicates that

the +32204GG genotype, which is related to a lower level of global DNA methylation, is associated with the intractability of GD. In addition, we have reported previously that genetic programming GPCR & G Protein inhibitor for production of higher interleukin (IL)-1β and transforming growth factor (TGF)-β levels are associated with intractability of GD [26,27]. It is well known that demethylation of the CpG site in the promoter regions enhance gene expression [28,29]. Therefore, lowered global DNA click here methylation ability in individuals with the +32204GG genotype may decrease the methylation levels of IL1B and TGFB promoter regions and enhance the production of IL-1β and TGF-β. This may be a potential candidate mechanism to impede induction remission in GD patients with DNMT1+32204GG genotype. In addition, we clarified that the MTRR+66AA genotype was more frequent in

patients with severe HD than in those with mild HD. Previous reports showed that homocysteine levels were increased in plasma obtained from individuals with the MTRR+66AA genotype [21]. There are two possible mechanisms that may explain how the MTRR+66AA genotype is related to the severity of HD. One possibility is that increased homocysteine levels may cause an insufficient supply of methyl groups and result

in a decrease in global DNA methylation [24]. In this study, however, global methylation levels of DNA were not associated with the genotypes of the MTRR+66A/G polymorphism (Fig. 3). Another possibility is that an increase in homocysteine levels may increase caspase-3 activity and, thus, apoptosis in thyroid epithelial cells in HD patients with the MTRR+66AA genotype, as it has PJ34 HCl been reported that homocysteine induces caspase-3 activity and apoptosis in various cells [30–33]. Previous reports also suggest that caspase-3 is highly expressed in thyroid epithelial cells in HD patients [34]. In conclusion, the DNMT1+32204GG genotype is associated with hypomethylation of DNA and is related to the intractability of GD, while the MTRR+66A/G polymorphism is associated with the severity of HD. No potential conflicts of interest were disclosed. “
“Citation Li C, Qiao B, Zhan Y, Qi W, Chen Z-J. First evidence of genetic association between the MIF-173G/C single-nucleotide polymorphisms and polycystic ovary syndrome.

Two antebrachial nerves were coapted to the ilioinguinal nerve an

Two antebrachial nerves were coapted to the ilioinguinal nerve and to one of the dorsal clitoral nerves to provide protective and erogenous selleck screening library sensitivity. The initial postoperative course was uneventful. Unfractionated heparin (10,000 IU) was applied for the first 24 hours, followed by prophylactic fractionated heparin (5,000 IU). 100 mg acetylsalicylic acid was administered after postoperative

day (POD) 1. Flap monitoring was assessed clinically and by handheld Doppler by trained nursing personnel every hour for the first 24 hours, then every 3 hours until POD 4, and afterwards once per nursing shift. At the end of postoperative week 2, we observed a partial flap necrosis affecting the full length of both lateral flap borders leading to a complete necrosis of the neo-urethra and

of a 2 cm wide strip on the ventral outer lining of the neo-phallus (Fig. 1, left). Debridement of the necrotic areas resulted in a complete resection and loss of the neo-urethra and a part of the ventral outer lining of the neo-phallus (Fig. 1, right). A second free RFF from BI 2536 nmr the contralateral side was harvested as a salvage procedure to reconstruct both the neo-urethra and the necrotic part of the outer lining of the neo-phallus. A modified, shortened Chang-design was harvested from the so far intact right forearm: the part of the flap used for neo-urethra-reconstruction measured 3.5 cm × 14 cm, followed by a 0.5 cm wide, de-epithelialized strip and a shortened strip of 3 cm × 11 cm for the reconstruction of the outer lining of the neo-phallus (Fig. 2). The neo-urethal part was wrapped around a 17 Ch foley catheter with the skin-inside and closed onto the de-epithelialized strip. After urethral reanastomosis to the lengthened pars fixa, the remaining outer lining of the initial neo-phallus was wrapped around it. The phallic part of the second flap was incorporated into the ventral outer lining in order to regain a sufficient circumference (Figs. 3 Megestrol Acetate and 4). The microvascular

anastomoses were performed in the intact left groin with an end-to-side anastomosis of the radial artery onto the common femoral artery. One of the comitant veins and a total of three subcutaneous veins of the flap were connected onto branches of the great saphenous vein in an end-to-end fashion. No nerve reconstruction was performed. The donor-site was covered with FTSG. A summarizing illustration of the surgical technique is given in Figure 5. Postoperatively, the same pharmacological and flap screening protocol was applied as for the first RFF. The postoperative courses were uneventful. No flap-related complications occurred. After discharge, clinical examinations took place at the outpatient clinics 1, 3, 6, and 12 months postoperatively.

Using the Pressure-Specified Sensory Device epicritic, propriocep

Using the Pressure-Specified Sensory Device epicritic, proprioceptive, and protopathic sensitivities high throughput screening were tested. Outcomes were compared with those of a control group of 5 patients addressed to reconstruction with perforator flaps (3 anterolateral thigh flap, 2 vertical deep inferior perforator flap). At mean 21-month follow-up all flaps healed uneventfully without need for revisions, all developing more satisfactory results in terms of skin color (P = 0.028) and texture (P = 0.021) match, shape (P = 0.047) and bulkiness (P =

0.012) compared with perforator flaps. No differences in epicritic, proprioceptive, and protopathic sensitivities were observed (P > 0.05) between the two groups. Skin-grafted LD flap may be a suitable option for reconstruction of wide defects of the lateral aesthetic units of the face. © 2014 Wiley Periodicals, Inc. Microsurgery, 2014. “
“The objective of this study was to determine precise localization and external diameter of the lower abdominal wall perforators as well as to investigate some vascularity differences between the same parts of perfusion zones II and III according to Hartrampf perfusion Roxadustat supplier zones. The study was performed

on 10 fresh cadavers (20 hemiabdomens) using the gelatin injection technique. All perforators were identified, and their localization and diameter were noted. Measurements were made at the level of the fascia. We noted localization and diameter of arteries on cross-sectional planes of either part of the flap. The median sum of the external diameter of all arteries in zone I was 17.01 mm. The median sum of the external diameter of all arteries in the medial 1/3 part of zone III was 4.17 mm, and in the medial 1/3

part of zone II, it was 0.96 mm. The median sum of the external diameter of all arteries in the intermediary 1/3 Mirabegron part of zone III was 2.16 mm, whereas in the intermediary 1/3 part of zone II, it was 0.81 mm. Significant differences were recorded between proximal and middle horizontal regions of zones II and III and between medial vertical part of zone III and medial vertical part of zone II. Anastomoses between zones I and II are considerably smaller compared with anastomoses between zones I and III. The best vascularized parts of the lower abdominal wall were perfusion zone I, then the inner 2/3 of zone III and medial 1/3 of zone II. © 2011 Wiley Periodicals, Inc. Microsurgery, 2012. “
“Controversy exists over how long a free flap is dependent on its pedicle and if neovascularization is different between flap types, recipient sites, and irradiated and nonirradiated patients. An understanding of the timing of this process should optimize the safety of secondary procedures involving the flap. In a prospective clinical study, hemoglobin oxygenation and capillary flow were measured in 50 flaps (25 forearm flaps, 15 osteocutaneous fibula flaps, and 10 anterolateral thigh flaps) 4 and 12 weeks postoperatively.

© 2012 Wiley Periodicals, Inc Microsurgery, 2012 “
“Pulsed

© 2012 Wiley Periodicals, Inc. Microsurgery, 2012. “
“Pulsed acoustic cellular expression (PACE) is a treatment that applies focused acoustic shock waves to promote tissue healing. The aim of this study was to assess the effect of PACE treatment on inflammatory responses in a cremaster muscle ischemia/reperfusion injury model. Seventeen cremaster muscle flaps were evaluated

in four groups: nonischemic controls (n = 5), 5-hour Selleckchem Atezolizumab ischemia controls (n = 4), preischemic (5-hour) PACE conditioning (n = 4), and postischemic (5-hour) PACE conditioning (n = 4). The expression of proinflammatory cytokines (TNFα, IL-6, IL-1α, IL-1β, GM-CSF) and chemokines (CCL3, CCL4, CXCL4) was assessed using TaqMan® real-time PCR. Expression of ELAM-1, VCAM-1, and ICAM-1 was assessed by immunostaining. Preischemic PACE conditioning upregulated expression of IL-6, CCL3, CCL4, and CXCL4, and downregulated expression of TNFα, GM-CSF, and IL-1α. Postischemic PACE conditioning significantly decreased expression of all evaluated genes. Pre- and postischemic PACE conditioning decreased expression of ELAM-1 and ICAM-1. Results of the study indicate

that application selleck kinase inhibitor of PACE conditioning may have a beneficial effect on the recovery of tissues subjected to the ischemia/reperfusion injury. Postischemic PACE conditioning revealed anti-inflammatory effect as confirmed by decreased expression of inflammatory cytokines, chemokines, and cell adhesion molecules (ELAM-1 and Protein Tyrosine Kinase inhibitor ICAM-1) that are responsible for leukocyte

recruitment into ischemic tissues. Hence, PACE therapy may be used effectively in clinical practice as a convenient therapeutic strategy to protect tissues against ischemia/reperfusion related injury after microsurgical procedures of free tissue transfers. © 2012 Wiley Periodicals, Inc. Microsurgery, 2013. “
“The reconstruction of complex hand injury such as multifinger soft tissue defect remains a challenging problem. Two cases of repair of multifinger injury with exposed bones using the free chimeric flaps based on the dorsalis pedis vessels are presented. Two male patients, 46 years old and 36 years old, suffered from a thermocompression injury to the dorsum of fingers resulting in soft tissue defects of multiple fingers. The chimeric free flap was designed and applied to cover the defects. The donor sites were covered by skin grafts. The postoperative courses were uneventful. Both patients were followed up for 10–12 months. The maximal flexion angle of the distal interphalangeal, proximal interphalangeal, and metacarpophalangeal joints were 40°–85° at the end of the follow-up. The protective sensation was achieved on the dorsal fingers. The report suggests that the free chimeric flaps based on the dorsalis pedis artery may be an alternative for the reconstruction of the multifinger dorsal soft tissue defects. © 2013 Wiley Periodicals, Inc. Microsurgery 33:660–666, 2013.

2B–E) The structural integrity of VLPs is required for killing a

2B–E). The structural integrity of VLPs is required for killing and cytokine secretion functions, since heating disruption of VLPs (95°C condition) decreased both activities (Fig. 2C and E). Internalization of HPV–VLPs in DCs has been shown to induce their activation 22, but it is unknown whether the virus could also specifically enter

into NK cells. Therefore, we investigated VLP uptake by NK cells using CFSE-labeled VLPs. CFSE is a marker that becomes fluorescent only after the removal of the acetate groups by cellular serine esterase, i.e. inside the cells learn more 23. We performed a kinetic study with CFSE–VLPs at 37°C on NK, CasKi cells and DCs. We observed a weaker fluorescence in NK cells compared with CasKi, although the fluorescence in selleck chemical NK cells reached a plateau very quickly (after 10 min) (Fig. 3A). We also compared the entry into DCs and NK cells derived from the same donor. After 10 min of incubation, we observed a higher fluorescence in NK cells compared with DCs (Fig. 3B). This uptake was not restricted to VLPs from

HPV16, since the VLP entry into NK cells was similar with HPV31– and HPV16–VLPs (Supporting Information Fig. 2A). The VLP entry seemed to require an active process because entry did not occur at 4°C (Supporting Information Fig. 2B). When the VLP structure was disrupted by heating at 95°C, the resulting fluorescence intensity in NK cells was significantly decreased, suggesting that the conformation of VLPs is important for the process of internalization (Supporting Information Fig. 2B). In order to visualize the entry of VLPs into NK cells, we performed confocal and electron microscopy analyses (Fig. 4). Carnitine palmitoyltransferase II We detected fluorescent VLPs in few large fluorescence spots inside NK cells after 10 min of VLP incubation at 37°C (Fig. 4A) but not in DCs or in CasKi cells (data not shown). After 5 h of incubation, VLPs were observed as being dispersed in the cytoplasm of DCs (Fig. 4B) and of CasKi cells (Fig. 4C). This VLP distribution was not observed in NK cells; even after 10 h of incubation, VLPs were still contained in few large vesicles. Electron microscopy

experiments were performed on NK cells incubated with VLPs (Fig. 4D–F). VLPs were present in large vacuoles (mean diameter: 0.24±0.14 μm, n=22) after 10 min of incubation (Fig. 4D). Similar observations were made after 6 to 18 h and fusion of these vacuoles with the nucleus was not observed (data not shown). At a longer incubation period (18 h), we noticed very large vacuoles, which could come from fusion of smaller vesicles and where VLPs seemed partially degraded (Fig. 4E). We did not observe clathrin-coated vesicles containing VLPs in NK cells as observed in DCs (Fig. 4F) where the vacuole size was smaller (mean diameter: 0.12±0.3 μm, n=6). The membrane ruffles observed by electron microscopy of NK cells in the presence of VLPs (Fig.

Melkonyan et al detected 22 different urinary miRNAs, but none w

Melkonyan et al. detected 22 different urinary miRNAs, but none was kidney-specific.97 Analysis of miRNA expression in single urine samples revealed the miRNA ratios miR-126 : miR-152 and miR-182 : miR-152 were significantly elevated in

urine of urothelial bladder cancer patients compared with urine of healthy donors and patients with urinary tract infections, enabling a separation of tumour patients from the control groups.98 The ratio miR-126 : miR-152 showed an average 9.9-fold increase in urine samples from patients with bladder cancer in comparison with healthy donors. These studies have revealed a new possibility in the development of non-invasive investigation of kidney diseases by using specific urinary miRNAs as biomarkers for disease diagnosis or www.selleckchem.com/products/EX-527.html progression. Exosomes have also been detected in urine.99–101 Urinary exosomes are a rich source of intracellular kidney injury biomarkers because they are released PD0325901 from every segment of the nephron, including podocytes.99 Urinary exosomal transcription factors have already been proposed

as renal tubular cell biomarkers for acute kidney injury.102 Zhou et al. demonstrated that levels of miR-27b and miR-192 in urinary exosomes could differentiate lupus patients with or without nephritis.103 It is expected that miRNA-containing exosomes in the urine can provide both valuable diagnostic and prognostic information for patients with kidney diseases. The evidence implicating miRNAs in the pathophysiology of human diseases has

triggered great interest in developing modalities to inhibit miRNAs and their functions. Manipulations of miRNAs can coordinately Interleukin-3 receptor affect many components of a pathway as opposed to the gene-specific suppression achieved by siRNA targeting. Specific miRNA activity can be inhibited by several methods, which involve antisense strategies and include chemically modified antisense oligonucleotide inhibitors (antagomirs) or the transgenic introduction of tandem miRNA-binding site repeats (known as Decoy or Sponge technologies).23,104,105 One particularly useful form of oligo inhibitor is the antisense locked nucleic acid-modified oligonucleotide, which shows enhanced therapeutic potential.106,107 This strategy has been successfully used in vivo to inhibit hepatic miR-122 activity and thereby reduce serum cholesterol levels in primates,106 as well as reduce Hepatitis C viral load.108 As described above, several miRNAs such as miR-192 and miR-377 lead to extracellular matrix accumulation, podocyte dysfunction, albuminuria and EMT in diabetic nephropathy. It is plausible to suggest that silencing such miRNAs with ‘antagomirs’ may represent a potential therapeutic strategy. Conversely, in kidney diseases in which miRNAs are downregulated, restoring miRNA function by the administration of miRNA mimics may have therapeutic potential. MicroRNAs have also been reported to modulate replication of viral RNA.

5E) Similar

to the observed effect on IFN-β, poly(I:C) i

5E). Similar

to the observed effect on IFN-β, poly(I:C) induced higher expression of other genes sensitive for TRIF-dependent regulation (IFN-α1, IFN-α2 and CCL5) when the cells received LPS pre-treatment whereas we did not consistently observe a similar effect on CXCL10 expression. Overall, our results indicated the downregulation of MyD88-dependent TLR signals in response to LPS pre-treatment of developing MoDCs. The TRIF-dependent TLR pathways, on the other hand, might remain functional following a persistent LPS stimulation. We compared gene expression of chemokine molecules in MoDCs cultured with or without LPS for 2 days and observed a significant increase in the expression of CCL5, CCL18, CCL19, CCL23, CCL24, CCL26, CXCL1, www.selleckchem.com/products/dabrafenib-gsk2118436.html CXCL2 and CXCL5, in the presence Torin 1 chemical structure of LPS that suggests an increased ability of the LPS-treated MoDCs to attract both resting and activated T cells, as well as granulocytes (Fig. 6A). In addition to such possible contribution to the cellular influx associated with tissue inflammation, LPS-treated MoDCs might

increase their motility by cleaving extracellular matrix constituents as suggested by the elevated MMP7, MMP9 and MMP12 mRNA levels in these cells. In order to understand whether MoDCs that received activation signals at early stages of their development could obtain migratory potential towards lymphoid tissues, and contribute to naïve T-cell activation, we studied their chemokine receptor pattern during the first day of culture in the presence of a wide range of activation stimuli. As MoDCs responded readily with a strong cytokine production when receiving activation Carbohydrate signals (day 1) and became later functionally exhausted and incapable to respond to further stimulation (day 2), an early chemokine receptor modulation might be

prerequisite for the migration of functional, not-exhausted MoDCs to lymphoid tissues. We studied CCR5 and CCR7 expression on MoDCs that received activation signals during the first day of their culture and compared these cells with MoDCs that received the same activation signals at a more differentiated stage, at day 5 of the culture. Interestingly, CCR5, a chemokine receptor that primes migration to inflamed peripheral tissues, was not downregulated and CCR7 was not induced when MoDCs received activation signals early in their development. On the contrary, MoDCs that developed for 5 days without activation downregulated CCR5 in response to LPS, HKSA, zymosan or CD40L and several of the tested activation signals induced the expression of CCR7 on these cells (Fig. 6B).

Although a number of immunoregulatory cells have been described i

Although a number of immunoregulatory cells have been described in the literature, [4–15], it is thought that CD4+ T cells expressing high levels of the interleukin JQ1 mouse (IL)-2 receptor α chain, CD25 are the most important in the maintenance of peripheral tolerance. These CD4+CD25hi regulatory T cells (Tregs) are derived developmentally

from the neonatal thymus [16], but can also be generated directly from naive precursors in the periphery through appropriate activation and cytokine receptor engagement (see below). The former, referred to as natural (n)Tregs, develop in response to self-antigens expressed in the thymus and maintain peripheral self-tolerance while the latter, referred to as induced

(i)Tregs, are thought to develop in response to environmental antigens and maintain tolerance to non-self components such as gut flora and ingested material. These two populations have few characteristics that can distinguish them in the peripheral TAM Receptor inhibitor blood (differences between nTregs and iTregs are summarized in the review by Horwitz et al.[17]), therefore for the purposes of the present paper they will be considered together. The critical, non-redundant, importance of Tregs in mammalian biology is highlighted Gemcitabine supplier by the development of life-threatening autoimmune diseases in both humans and mice who are deficient in this population (as a result of mutations in the FOXP3 and foxp3 genes, respectively; see below) [15,18–20]. While the precise means of Treg function are not entirely understood it is likely that they possess a functional

repertoire of suppressive mechanisms, which would be consistent with diverse descriptions of suppression through direct cell-to-cell contact, production of soluble mediators [21–23] and activity through intermediary cells [24,25]. As a result, Tregs have the in vitro ability to inhibit proliferation and production of cytokines [notably IL-2 and interferon (IFN)-γ] by non-regulatory, traditional T cells (CD4+CD25-) [26–29] as well as responses of CD8+ T cells, monocytes and natural killer (NK) cells [26,30,31]. These predicates translate in vivo to a greater number of functions other than the maintenance of tolerance to self-components (i.e. prevention of autoimmune disease) [32] and include control of allergic diseases [33], maintenance of gastrointestinal (GI) tolerance [34] and maternal acceptance of semi-allogeneic fetal antigens [35]. A detailed review on Treg functions is provided by O’Connor et al. in this series [36].

2A) The total number of OT-II T cells in spleen was increased in

2A). The total number of OT-II T cells in spleen was increased in 11c.OVA (Fig. 2B), indicating the expansion of the OT-II population was consistent with the

division indicated by CFSE dilution. As previously reported for naïve T cells 13, 17, 18, we have found that memory CD8+ T cells exert a transient period of effector function upon interaction with steady-state DC 4. To test whether this was observed here, cytokines in Raf inhibitor culture supernatant of splenocytes restimulated in vitro with or without OVA323–339 were measured by ELISA. This showed that, despite the increase in the number of OT-II T cells in spleens of 11c.OVA recipients 3 days after transfer (Fig. 2B), IFN-γ production was reduced relative to nontransgenic recipients (Fig. 2C). Similarly, IL-2 production Lumacaftor was reduced in 11c.OVA OT-II recipients and a small amount of IL-4 production

in response to OVA323–339 detected in 11c.OVA recipients. To further analyze this, we performed intracellular cytokine staining and analyzed cytokine production specifically in transferred OT-II T cells. This showed that fewer OT-II T cells recovered from 11c.OVA recipients produced IFN-γ and IL-2 relative to those from nontransgenic recipients (Fig. 2D) and also relative to IFN-γ production observed before transfer (Fig. 1B). IL-4 and IL-10 were not detected in either nontransgenic or 11c.OVA recipients. Additionally, Foxp3 was not detectable in OT-II recovered from spleens of 11c.OVA or nontransgenic recipients (data not shown). Overall, these

data demonstrate that the activation of OT-II memory-phenotype CD4+ T cells by steady-state antigen-expressing DC induces proliferation with subsequent damping of IFN-γ and IL-2 production. We next analyzed the time-course of OT-II accumulation in lymphoid and nonlymphoid tissues. In nontransgenic recipients 1 day after transfer, OT-II memory T cells were recovered in largest numbers from the spleen, but by 3 days post-transfer, OT-II T cells appeared to have redistributed from spleen and started to accumulate in larger numbers in LN and lung (Fig. 3) and Vitamin B12 from this point OT-II cells were established as relatively stable populations in spleen and LN (no significant differences were observed between d3, d7, d21, d28 in spl and LN, respectively) and persisted in these sites in similar numbers for up to 4 wk post-transfer. In 11c.OVA recipients, consistent with proliferation demonstrated by CFSE dilution, the total number of OT-II cells recovered from spleen initially increased between 1 and 3 days post-transfer (p<0.01) and then diminished (p<0.001, d3 versus d7; d7 versus d21; d21 versus d28), indicating a period of population contraction following the initial transient expansion. In LN, the pattern of OT-II accumulation in 11c.