[Valve-like formations in human placental veins].
D005260:Female; D006801:Humans; D010920:Placenta / Q000033:anatomy & histology / Q000098:blood supply*; D011247:Pregnancy; D014680:Veins / Q000033:anatomy & histology*
O klapanopodobnykh obrazovaniiakh v venakh platsenty cheloveka.