[An ultracytochemical study of the hydrogenosomes of Trichomonas vaginalis].

The ultracytochemical study of cultural T. vaginalis has been carried out. The activity of magnesium-dependent ATPase, transport (sodium-potassium-dependent) ATPase and adenylate cyclase was detected in dense corpuscles, located on the membranes of hydrogenosomes having a rounded form. The authors suggest that the dense corpuscles are the zones of the active transport of ions through the membranes of hydrogenosomes.