The Structure of the Allantoic Placenta of the Senegal Bush Baby (Galago Senegalensis Senegalensis)

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Abstract
The placenta is of the epithelio-chorial variety but the uterine cavity persists in the pits of the villous tips and in the chorionic vesicles. A placenta with essentially the same structure is found in G. crassicaudatus, Chiromys, Loris and Nycticebus but not in G. demidovii. The trophoblast shows marked morphological variations in the various parts of the placenta and these appear to be linked with differences in chemical composition and different modes of transfer of various substances. Glycogen, muco-polysaccharides, muco- and glycoproteins and ferrous iron have been found. Both the chorionic vesicles and the uterine glands are distended with very fluid uterine milk. Numerous microvilli lie in the clefts between the bases of the trophoblast cells of the chorionic villi in the vesicles. The outstanding feature of the endometrium is the presence of numerous mast cells around the uterine glands.