title: The ontogeny of clotting factors.
authors.forename: O D
authors.initials: OD
authors.lastname: Ratnoff
mesh_terms: D000818:Animals; D001779:Blood Coagulation Factors; D005314:Embryonic and Fetal Development; D005260:Female; D006801:Humans; D007231:Infant, Newborn / Q000097:blood*; D011247:Pregnancy; D012756:Sheep; D014812:Vitamin K / Q000627:therapeutic use; D006475:Vitamin K Deficiency Bleeding / Q000517:prevention & control
chemical_list: D001779:Blood Coagulation Factors; D014812:Vitamin K