An in vitro study of functions of embryonic membranes in the rat

摘要: Ten-day rat embryos have been cultivated in vitro, with different layers of the extraembryonic membranes removed. The effects presence or absence each membrane on morphology embryos, their histodifferentiation and uptake leucine into protein followed. Explants all left intact failed to expand fully undergo axial rotation embryo, but nevertheless showed highest total biochemical estimations autoradiographs. outer removed visceral yolk sac most normal expansion cavities when compared from uterus at 11·5 days” gestation, they less than first series. which was underwent little growth development had low values radioactivity counts. amnion collapsed amniotic cavity disappeared. When there a greater incidence death, as well no development, lower counts two It is concluded that play an important role transfer small metabolites regulating volume fluids.