ScienceJohn Michels (Journalist) 1942 |
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Стр. 187
... biotin had no effect on the growth of this organism . Recently Landy et al . ' re- ported that Corynebacterium diphtheriae ( Park 8 ) grows in the absence of free biotin in the medium . While we were considering the utilization of the ...
... biotin had no effect on the growth of this organism . Recently Landy et al . ' re- ported that Corynebacterium diphtheriae ( Park 8 ) grows in the absence of free biotin in the medium . While we were considering the utilization of the ...
Стр. 188
... biotin production in cultures containing pimelic acid could be attributed to an increased growth of the cul- tures rather than to a conversion of pimelic acid into biotin . The biotin free medium for yeast , 5 adjusted to pH 5.2 , was ...
... biotin production in cultures containing pimelic acid could be attributed to an increased growth of the cul- tures rather than to a conversion of pimelic acid into biotin . The biotin free medium for yeast , 5 adjusted to pH 5.2 , was ...
Стр. 457
... biotin with strong barium hydroxide for 20 hours at 140 ° . This brought about the formation of a new diamino acid which could be isolated in excellent yield . The analy- sis of the free compound led to the empirical formula C ...
... biotin with strong barium hydroxide for 20 hours at 140 ° . This brought about the formation of a new diamino acid which could be isolated in excellent yield . The analy- sis of the free compound led to the empirical formula C ...
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active adipic acid agricultural animals appointed Army assistant awarded Biol biological biotin blood Board carbon cells cent chairman Chem chemical chemistry chemists Chicago CO₂ colchicine College committee Company compound Council course culture director discussion disease Division effect electric engineering entomologist experimental experiments field Foundation Hospital human important increase industrial Institute interest investigation John Jour laboratory lectures material mathematics Medical School ment method Museum National natural nutrition observations obtained Office organization papers physicians physics pimelic acid plants plasma poliomyelitis possible present president problems production professor protein Public Health pyruvic acid reaction recently reported rubber SCIENCE FRIDAY scientific scientists Section selenium serum session Smithsonian Institution Building Society sodium soil solution species substances sulfanilamide sulfhemoglobin sulfonamide synthetic tests tetraploid tion tissue tube tyrothricin United University ventifacts virus vitamin vitamin E War Production Board Washington York