Bioassay of vitamin K in chicks.
D000818:Animals; D001681:Biological Assay; D011200:Poultry; D011517:Prothrombin Time; D011809:Quinones / Q000378:metabolism; D014688:Venoms; D014812:Vitamin K / Q000032:analysis*
D011809:Quinones; D014688:Venoms; D014812:Vitamin K