[On the smallest human embryo studied up to the present time (27 mm. and 2.2 grams) in whose blood the hereditary features A1, M, N, s, Fy(a-plus), C, c, D, E, e, Jk(a-plus ?) could be detected].
D001789:Blood Group Antigens; D004622:Embryo, Mammalian / Q000097:blood*; D004625:Embryo, Nonmammalian; D005826:Genetics, Medical; D006801:Humans
D001789:Blood Group Antigens
BLOOD GROUPS; EMBRYO/blood; GENETICS, HUMAN