1. Serum proteins versus free amino acids as a source of amino acids for protein synthesis by cultured rat embryos;Beckman;Teratology,1986
2. The production of congenital malformations using tissue antisera. VII. Yolk sac antiserum;Brent;Teratology,1971
3. Nutrient requirements of rat embryos undergoing organogenesis in vitro;Cockroft;Journal of Reproduction and Fertility,1979
4. Evidence that protein ingested by the rat visceral yolk sac yields amino acids for synthesis of embryonic protein;Freeman;Journal of Embryology and Experimental Morphology,1983
5. The role of the visceral yolk sac in mediating protein utilization by rat embryos cultured in vitro;Freeman;Journal of Embryology and Experimental Morphology,1981