Their research focused on characterization of the radioactive elements formed during uranium fission. During that time, Gest also signed a petition drafted by fellow scientist Leo Szilard urging President Harry Truman to demonstrate the power of the bomb to the world and give Japan an opportunity to surrender before it was used. When World War II ended, Gest completed graduate work (Ph.D. 1949) at Washington University in St. Louis as the first student of Martin Kamen, a pioneer nuclear chemist renowned as the co-discoverer of carbon 14. During this Wnt inhibitor period, Gest also did research with Alfred

Hershey on the fate of radioactive phosphorus during the multiplication of bacterial viruses. That work culminated in the discovery of “P-32 suicide” of bacteriophage. The remainder of his scientific

career was focused on microbial physiology and metabolism with photosynthetic bacteria where he was widely recognized for his contributions to this field. In the 1970s, Gest and co-workers undertook some of the first genetic studies on photosynthetic bacteria and in the 1980s he isolated several new genera of photosynthetic bacteria, including Heliobacterium chlorum that represented the first example of a photosynthetic spore forming Gram-positive bacterium. This contribution that was recognized by a scientific colleague who named a new species in this genera Heliobacterium gestii. In the years following his retirement from laboratory research, Gest focused on the history of science, with particular emphasis

Carfilzomib SPTLC1 on the under-appreciated contributions of the English scientist Robert Hooke, with respect to microscopy and other aspects of microbiology. Gest was also a frequent contributor to Microbe and other journals, often criticizing what he considered to be the current over-reliance on molecular methodologies to the exclusion of classical microbiology and cultivation-based techniques. He remained an active, independent, and insightful scholar of microbiology and the practice of science in general, right up to his passing. During a remarkable 70-year scientific career, Gest published more than 300 papers and books including co-editing the 1,300-page “Discoveries in Photosynthesis” (2006) that was described by Current Science as “easily among the most outstanding and valuable books published in the biological sciences in the last 100 years.” Reference Govindjee, Beatty, JT, Gest H, Allen JF (eds) (2006) Discoveries in Photosynthesis. In: Advances in photosynthesis and respiration, vol 20. Springer Press, Berlin”
“David, the son of Cyril and Dorothy Walker, was born in Hull, England. He attended the South Shields Boys High School (now Harton Technology College) from 1939 to 1946.