Gestational age and placental cellular replication.
D001345:Autoradiography; D004247:DNA / Q000096:biosynthesis*; D005260:Female; D005865:Gestational Age; D006801:Humans; D066298:In Vitro Techniques; D010920:Placenta / Q000166:cytology / Q000378:metabolism; D010929:Placentation; D011247:Pregnancy; D013936:Thymidine / Q000378:metabolism; D014316:Tritium; D014327:Trophoblasts / Q000254:growth & development
D014316:Tritium; D004247:DNA; D013936:Thymidine