The vitamin B12 content of human liver as determined by bio-assay of needle biopsy material.
D001707:Biopsy, Needle; D006397:Hematinics; D008099:Liver / Q000378:metabolism*; D014805:Vitamin B 12 / Q000032:analysis*
D006397:Hematinics; D014805:Vitamin B 12
LIVER/metabolism; VITAMIN B12/determination