Microbiological assay of vitamin B 12 and its role in evaluation of liver extracts.
D001681:Biological Assay; D045728:Corrinoids; D006397:Hematinics; D008110:Liver Extracts; D014805:Vitamin B 12 / Q000032:analysis*
D045728:Corrinoids; D006397:Hematinics; D008110:Liver Extracts; D014805:Vitamin B 12
LIVER EXTRACTS; VITAMIN B 12/determination