Progestin effects on prolactin secretion and on immunoreactive prolactin cells in estradiol-treated ovariectomized rats. - Oliveira,M.C.; Spritzer,P.M.; Poy,M.; Coronel,A.X.; Dahlem,N.; Moraes,J.T.; Barbosa-Coutinho,L.M. (Horm Metab Res, 1993)