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Electron microscopic study of the chorioallantoic placenta of the rock hyrax (Heterohyrax brucei).
(University of Nairobi., 1983-07)
The interhaemal membrane consisted of only two cellular elements: a single layer of cellular trophoblast and the fetal capillary endothelium. The hyrax is therefore one of the few mammals known to possess the cellular ...