Chaetophractus vellerosus. (A) Macroscopic anatomy. Chorioallantoic placenta disk (CP) of two embryos (E) with separate umbilical cords (UC). (B) Hematoxylin and eosin. Montage of the villous area (V) with fetal blood vessels inside (BV). Magnification 4*. (C) Hematoxylin and eosin. Villi in the intervillous space with capillaries near the surface.