Title: Observations on defined tissue, contractile region, tubular vessel, and blood islet formation in enzymatically formed trophoblastic vesicles, and the use of trophoblastic vesicles as a model system for the evaluation of embryonic cell metabolism in vitro
Subjects: Anatomy, Embryology, Experimental, Embryos, Experimental Embryology, Swine, Trophoblast, Veterinary embryology