1. Cells involved in the immune response;Abdou,1969
2. The existence during gestation of an immunological buffer zone at the interface between maternal and foetal tissues;Amoroso;Phil. Trans. R. Soc. Lond. B,1975
3. Immunoregulatory aspects of pregnancy;Beer,1978
4. Human chorionic gonadotropin: Effects of crude and purified preparations on lymphocyte responses to phytohemagglutinin and allogeneic stimulation;Caldwell;J. Immunol.,1975
5. Reevaluation of histamine in implantation;Dey,1980