Sites of earliest collagen-formation in the chick embryo, as indicated by uptake of tritiated proline.
D000818:Animals; D003094:Collagen; D004622:Embryo, Mammalian; D004625:Embryo, Nonmammalian; D011392:Proline
D003094:Collagen; D011392:Proline
COLLAGEN; EMBRYO; PROLINE