Word: gramicidin
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...this method and refinements of it, he at last found, in a sample of cranberry bog soil sent to him by Waksman, an organism from whose cultures he separated an active fraction that he named gramicidin. It killed or halted many disease bacteria, but it was dangerous for internal...
...spite of such failings, gramicidin touched off a chain reaction. Dubos announced its discovery in 1939. A group of British researchers heard about it and recalled Alexander Fleming's Penicillium notatum. The substance it secreted is penicillin. Ripples of excitement spread through the world's biological laboratories...
...Doctors are experimenting with at least 122 promising antibiotics. But only the Big Two-penicillin and streptomycin-are widely used on human patients. Runners-up: Aerosporin, chloromycetin, bacitracin, polymixin, gramicidin...
...Gramicidin is not a mold extract, but is produced by bacteria. The development of penicillin was independent of our work with gramicidin...
...year-old, twinkling professor with a scientific slouch, a strong French accent and gestures. He came to the U.S. in 1924, at Rutgers completed the training he began in Paris. The TB culture may or may not be his greatest achievement: his discovery (in 1937) of gramicidin, first of the germ-killing mold extracts, led to the development of penicillin. His latest find, he hopes, will lure young doctors into TB research, hitherto shunned because "the chances of finding something have been practically...