Vitamin B12 in the developing chick embryo.
D004622:Embryo, Mammalian; D004625:Embryo, Nonmammalian; D047108:Embryonic Development; D006397:Hematinics; D014805:Vitamin B 12 / Q000378:metabolism*
D006397:Hematinics; D014805:Vitamin B 12
EMBRYO; VITAMIN B12/metabolism