Figure 8
From: Growth and development of the placenta in the capybara (Hydrochaeris hydrochaeris)
Chorioallantoic placenta of the capybara at around 90 days of gestation. (A) Immunostaining for PCNA shows proliferative cytotrophoblast (arrows) under the allantoic mesoderm near the surface of the placenta. (B) Proliferating cells (arrows) are still seen within the placenta both in association with fetal mesoderm and within the labyrinth. Fm = allantoic or fetal mesoderm. Scale bars = 40 μm.