References
- Cibilis L A. Growth of the placental villi in the first trimester. J Reprod Med 1968; 1: 377–87
- Wynn R M. Cytotrophoblastic specializations: an ultrastructural study of the human placenta. Am J Obstet Gynecol 1972; 114: 339–55
- Enders A C. Fine structure of anchoring villi of the human placenta. Am J Anat 1968; 122: 419–52
- Enders A C, Schlafke S. Cytological aspects of tropho‐blast‐uterine interaction in early implantation. Am J Anat 1969; 125: 1–30
- Pijnenborg R, Dixon G, Robertson W B, Brosens I. Trophoblastic invasion of human decidua from 8 to 18 weeks of pregnancy. Placenta 1980; 1: 3–19
- Pijnenborg R, Bland J M, Robertson W B, Dixon G, Brosens I. The pattern of interstitial trophoblastic invasion of the myometrium in early human pregnancy. Placenta 1981; 2: 303–16
- Kurman R J, Main C S, Chen H C. Intermediate tropho‐blast: A distinctive form of trophoblast with specific morphological, biological and functional features. Placenta 1984a; 5: 349–70
- Ruffolo R, Benirschke K, Covington H I, Munro A B. Electron microscopic study of the 'X‐cells' in septal cysts of the human placenta. Am J Obstet Gynecol 1967; 99: 1147–59
- Wislocki G B, Bennett H S. The histology and cytology of the human and monkey placenta, with special reference to the trophoblast. Am J Anat 1943; 73: 335–449
- Richart R. Studies of placental morphogenesis. I. Proc Soc Exper Biol Med 1961; 106: 829–31
- Gerbie A B, Hathaway H H, Brewer J I. Autoradiographic analysis of normal trophoblastic proliferation. Am J Obstet Gynecol 1968; 100: 640–8
- Bulmer J N, Morrison L, Johnson P M. Expression of the proliferation markers Ki‐67 and transferrin receptor by human trophoblast populations. J Repro Immuno 1988; 14: 291–302
- Hamada S, Fujita S. DAPI staining improved for quantitative cytofluorometry. Histochemistry 1983; 79: 219–26
- Kurman R J, Young R H, Norris H J, Main C S, Lawrence W D, Scully R E. Immunocytochemical localization of placental lactogen and chorionic gonadotropin in the normal placenta and trophoblastic tumors, with emphasis on intermediate trophoblast and placental site trophoblastic tumor. Int J Gynecol Pathol 1984b; 3: 101–21