Word: biotin
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Dates: during 1950-1959
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...irradiated foods are not at all radioactive, and no poisonous materials have been found in them. Suspicion is that the radiation may completely destroy natural vitamins (biotin, riboflavin. etc.), since the test animals show classic symptoms of severe vitamin deficiency. But the tests were haphazard and incomplete, so no one is sure that this is really the reason or how irradiated foods can be made assuredly safe. Director Morse has concluded that the whole program had better be restudied...
...also grows nonsexually, so a truckload of mold with the same heredity can be grown, if desirable, from a single spore. But the best thing about Neurospora is that it asks for so little. It thrives on a medium containing nothing but mineral salts, sugar and a single vitamin, biotin. Everything else that it needs it can make out of these simple foods...