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AAAS acid activity American animals antibiotics application Association Atomic auxin awarded bacteria Biochem Biol biological blood Cancer cells Chem chemical Chemistry chlordane coal balls College Committee compounds Conference Congress culture Department determined Director Division dose effect electric electron Engineering enzyme ethanol experimental experiments fellowships field genetic glucose glucuronic acid grant growth heptachlor hyaluronidase Ibid Illus injected Institute International investigations laboratory larvae magnetic magnetic moment Manuscript received material Medical Medicine ment methionine method mice National normal nuclear nucleons observed obtained organisms paper phenylalanine Physics Physiology plants present President problems production Professor progesterone protein radiation rats reaction reported rickettsiae samples School Science scientific scientists Sept serum silica Society solution strains streptomycin sucrose Sulcia Table techniques temperature thiamine tion tissue tube tumor Univ University virus Washington York