ScienceJohn Michels (Journalist) 1951 |
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Page 55
... vitamin B12 probably is a hexacoordinated cobalt complex , although these au- thors do not cite the experimental evidence on which this conclusion is based . Magnetic measurements on pure samples of vitamin B12 and related cobalt ...
... vitamin B12 probably is a hexacoordinated cobalt complex , although these au- thors do not cite the experimental evidence on which this conclusion is based . Magnetic measurements on pure samples of vitamin B12 and related cobalt ...
Page 215
... Vitamin B12 of High Specific Activity A RECENT report ( Chaiet , Rosenblum , and Wood- bury , Science , 111 , 601 [ 1950 ] ) described the micro- bial synthesis and isolation of crystalline vitamin B12 labeled with cobalt 60. The ...
... Vitamin B12 of High Specific Activity A RECENT report ( Chaiet , Rosenblum , and Wood- bury , Science , 111 , 601 [ 1950 ] ) described the micro- bial synthesis and isolation of crystalline vitamin B12 labeled with cobalt 60. The ...
Page 626
... vitamin B12 . The term " unprotected " indicates that the medium is not protected with reductants ( Table 1 ) . TABLE 1 Units / ug Sample A * Bt Thiocyanate analog 2,300 6,200 Vitamin B120 1,800 6,800 Vitamin B12 11,000 11,000 * L ...
... vitamin B12 . The term " unprotected " indicates that the medium is not protected with reductants ( Table 1 ) . TABLE 1 Units / ug Sample A * Bt Thiocyanate analog 2,300 6,200 Vitamin B120 1,800 6,800 Vitamin B12 11,000 11,000 * L ...
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AAAS Academy acid activity alkaline phosphatase American amino amino acids animals annual application ascorbic acid Association atomic Bentley Glass Biol biological biophysicist biophysics blood cells Chem chemical Chemistry Chicago College compounds cortisone cultures Department deuterium director disease effect electron endothelium energy engineering enzyme experimental experiments fibroblasts field genetics Geological hyaluronidase hydrogen Ibid increase indicate industrial injection Institute investigation Laboratory liver material measurements mechanics Medical Medicine meeting ment metal method mitochondria National nature nuclear observed obtained opsin organization paper particles physics Planck plants pollen zone present president pressure problems production professor protein quantum radiation rats reaction References reported retinene rhodopsin samples School scientific scientists Section Society sodium solution species succinic dehydrogenase temperature theory tion tissue tobacco mosaic virus University virus vitamin vitamin B12 Washington York