[Corticotrope and melanotrope cells in cat, fox, rat and human fetus adenohypophysis: studies with induced fluorescence, cytoimmunologic technics and lead hematoxyline].

Formaldehyde-induced fluorescence, acid-catalyzed or not, methods, and immunocytology with anti-ACTH (1-24), anti-ACTH(17-39), ANTI-BETA-LPH immunserums were applied on the same preparations of cat, fox, rat and human foetus pituitaries. The superpositions of results showed that the pars intermedia and pars distalis corticomelano-lipotrophic cells of fox and cat pituitary, those of human foetal pituitary, and the purely corticotrophics cells of the rat pars distalis contained a fluorogenic probably granular compound. Moreover, the granules of the same cell types were electively revealed on our lymphilized material by plombic hematoxylin. Only the anti-beta-LPH and/or anti-beta-MSH fixing celpls exhibited hypercyanophilic, PAS-positive and bleu alcian-positive caracteristics.