In this form of placentation the uterine epithelium and trophectoderm come into contact, the fetal and maternal microvilli interdigitate and placental development essentially involves a vast increase in area with no loss of any layers between the fetal and maternal bloodstreams. The exclusively cellular layers may become exceedingly attenuated, reducing the diffusion distance as pregnancy proceeds, but all persist to term (Amoroso 1952; Steven 1975a, 1983; Ramsey 1982; Mossman 1987).
CITATION STYLE
Wooding, P., & Burton, G. (2008). Eutheria: Epitheliochorial Placentation Pig and Horse. In Comparative Placentation (pp. 105–131). Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-540-78797-6_5
Mendeley helps you to discover research relevant for your work.