The determination of vitamin B12-activity in the organs and excreta of sheep. I. Microbiological assay methods.
D000818:Animals; D045728:Corrinoids; D005243:Feces; D012756:Sheep; D034561:Sheep, Domestic; D014020:Tissue Extracts; D014805:Vitamin B 12 / Q000032:analysis*
D045728:Corrinoids; D014020:Tissue Extracts; D014805:Vitamin B 12
FECES; TISSUE EXTRACTS; VITAMIN B12/determination