PROPERTIES AKD DISTRIBUTIOiC’ OF VITAMIN B12r*

Abstract

The existence of a new form of vitamin B,, in the feces of rats was first noted during a study of the effect of dietary cobalt on the growth of rats employed for vitamin Blz assay (1). When crude extracts of the feces ivere tested by the microbiological and rat assays, only a small fraction of the vitamin B,, activity measured microbiologically could be… (More)

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@inproceedings{Tappan2003PROPERTIESAD, title={PROPERTIES AKD DISTRIBUTIOiC’ OF VITAMIN B12r*}, author={Donald V. Tappan and Conrad Elvehjem}, year={2003} }