“…Recently, it has been demonstrated that foreign gonadotrophins are antigenic in the rabbit (Segal, Laurence, Perlbachs & Hakim, 1962;Talaat & Laurence, 1969;Schwartz & Ely, 1970;Monastirsky, Laurence & Tovar, 1971;Schuchner & Monastirsky, 1973). The aim of this study was to describe the effects of active anti-FSH immunization on the ovarian morphology of adult rabbits and the possible mechanism of action of FSH.…”