Rat growth assay for vitamin B12; correspondence with collaborative microbiological assay results on U.S.P. liver extracts.
D000818:Animals; D001681:Biological Assay; D003299:Cooperative Behavior; D008110:Liver Extracts; D051381:Rats; D014805:Vitamin B 12
D008110:Liver Extracts; D014805:Vitamin B 12
LIVER EXTRACTS; VITAMIN B12