[Immunohistochemical study of adenohypophysis cells reacting with antibodies against peptides of the opiocortine group in rock squirrels (Citellus variegatus Erxleben)].

Indirect immunofluorescence technique with anti-1-24ACTH, anti-17-39ACTH, anti-alpha and anti-beta endorphins, anti-beta LPH sera has allowed us to detect a cellular type in the anterior lobe of the Rock squirrel (Citellus variegatus) which react simultaneously with these five antisera. These cells are localized in the whole pars distalis and appeared either in clusters or dispersed; immunoreactive cells are regularly disposed along the pituitary cleft. Some cells of the intermediate lobe react with anti-1-24ACTH, anti-17-39ACTH and anti-beta LPH antisera, but not all these cells react with anti-endorphins antisera.