Vitamin B12. III. The assay of vitamin B12.
D001681:Biological Assay; D008110:Liver Extracts; D009696:Nucleic Acids; D014805:Vitamin B 12 / Q000032:analysis*
D008110:Liver Extracts; D009696:Nucleic Acids; D014805:Vitamin B 12
LIVER EXTRACTS; NUCLEIC ACIDS; VITAMIN B 12/determination