Distribution of the cytotrophoblast in the guinea pig placenta.
D000818:Animals; D005260:Female; D006168:Guinea Pigs / Q000033:anatomy & histology*; D010920:Placenta / Q000033:anatomy & histology*; D011247:Pregnancy; D013997:Time Factors; D014327:Trophoblasts / Q000033:anatomy & histology* / Q000166:cytology