title: Historical events in pathology. A pathologist looks at normal and abnormal trophoblast.
mesh_terms: D004626:Embryology / Q000266:history*; D005260:Female; D049673:History, 20th Century; D006801:Humans; D011247:Pregnancy; D014327:Trophoblasts / Q000033:anatomy & histology*; D014481:United States