Observations of Apparent C-Type Particles in Baboon (Papio cynocephalus) Placentas

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Science  30 Mar 1973:
Vol. 179, Issue 4080, pp. 1332-1333
DOI: 10.1126/science.179.4080.1332


Ultrastructural investigations have revealed the presence of apparent endogenously derived C-type particles in the placental villi of each of 13 baboons studied. Both budding and mature forms were observed in the syncytiotrophoblast of these animals at various stages of pregnancy.