File:Ramsey1960-fig04.jpg

Fig. 4. Radiograms of Monkey Placental Circulation

Photographs of four of a series of radiograms made at 3.5, 4, 5, and 6 sec, respectively, following injection of a radiopaque dye into the right femoral artery of Monkey 12B, 111 days pregnant.

The insert in the third photograph (lower left) is a magnification (x4) of the area inclosed in the box.

The arrows indicate spurts of dye into the intervillous space. RA, renal artery; SA, spiral artery of endometrium; HA, hypogastric artery; UA, uterine artery.

Reference

Ramsey EM. Corner GW. Jr. Donner MW. and Stran HM. Radioangiographic studies of circulation in the maternal placenta of the rhesus monkey: preliminary report. (1960) Proc. Natl. Acad. Sci. U.S.A., 46(7): 1003-8 PMID 16590693

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