The vitamin B12 content of human liver tissue and its nutritional significance; a comparison study of various age groups.
D000368:Aged; D000375:Aging; D006397:Hematinics; D006801:Humans; D008099:Liver / Q000378:metabolism*; D014805:Vitamin B 12 / Q000032:analysis*
D006397:Hematinics; D014805:Vitamin B 12
AGING/effects; LIVER/metabolism; VITAMIN B12/determination