1944: Edward Lawrie Tatum, David Mahlon Bonner and George
Wells Beadle use mutant strains of Neurospora crassa
to determine the
intermediate steps in the synthesis of tryptophan.
"The Inactivating Effect of Monochromatic Ultraviolet Radiation on Influenza Virus"
by Hollaender A, Oliphant J. W., Journal of Bacteriology, 1944 Oct;48(4):447-454.
"The effect of ultraviolet radiation and X-rays on mutation production in Penicilllium notatum", by Hollaender, A. and Zimmer, E. M., January 1945 (September, 1944), Genetics Society of America 30(1):8
Also: Genetics, 30:19-20 Abstract submitted to the September 12-14, 1944 Meeting of the Genetics Society of America.