Kalter S S, Helmke R J, Panigel M, Heberling R L, Felsburg P J, Axelrod L R
Science. 1973 Mar 30;179(4080):1332-3. 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.
超微结构研究显示,在所研究的13只狒狒的胎盘绒毛中均存在明显的内源性C型颗粒。在这些动物妊娠的不同阶段,在合体滋养层中观察到了出芽形式和成熟形式。