Microbiological assay of vitamin B12.
D001681:Biological Assay; D045728:Corrinoids; D004926:Escherichia coli; D056890:Eukaryota; D006397:Hematinics; D007778:Lactobacillus; D014805:Vitamin B 12 / Q000032:analysis*
D045728:Corrinoids; D006397:Hematinics; D014805:Vitamin B 12
ESCHERICHIA COLI; LACTOBACILLUS; MASTIGOPHORA; VITAMIN B12/determination