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Border zone

The border zone indicated by outline in figure 3. Streamers from the patch of syncytiotrophoblast (Syn.), in the lower right corner of the photograph, have invaded the endometrial stroma. Numerous detached plasmodial cells are also present. The stroma cells show a well marked decidual reaction. A spiral arteriole (Sp. A.) and a uterine gland (Gl.) are seen in the top half of the picture. Section 135.

Fig. 5. Heuser et al., 1945.

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Keywords: decidual reaction, endometrial stroma, plasmodial cells, spiral arteriole, syncytiotrophoblast, uterine gland

Source: The Virtual Human Embryo.