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Figure 1 | Reproductive Biology and Endocrinology

Figure 1

From: The fetomaternal interface in the placenta of three species of armadillos (Eutheria, Xenarthra, Dasypodidae)

Figure 1

Chaetophractus villosus. (A) Macroscopic anatomy. Uterus (U) with extensive chorioallantoic placenta (CP) and a single embryo (E) covered by the amnion (arrow). (B) Hematoxylin and eosin. Montage of the villous area (V) above the myometrium (Myo) with trophoblast within venous spaces (arrow). Magnification 10*. (C) Scanning electron microscopy. Branching villi. (D) Vimentin. Tips of the villi insides maternal blood sinuses with remnants of vimentin-positive endothelium. Some glands were present (arrow). (E) Cytokeratin. Positive response in the trophoblast and in derivatives of the spiral arteries (arrows). (F) Proliferation cell nuclear antigen. Proliferation activity was high in the trophoblast cell clusters (arrow). (G) Hypertrophied mesenchymal cells that reacted positive to vimentin were present (arrow).

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