1. Some immunological and endocrinological problems raised by the evolution of viviparity in vertebrates;Medawar;Symp Soc Exp Biol,1953
2. Trophoblast invasion and the establishment of haemochorial placentation in man and laboratory animals;Pijnenborg;Placenta,1981
3. Occurrence of trophoblasts in the blood of toxaemic patients;Jaameri;Gynaecologia,1965
4. The new placental proteins;Klopper;Placenta,1980
5. HLA A, B, C antigens are expressed on nonvillous trophoblast of the early human placenta;Sunderland;J Immunol,1981