Reports of studies conducted on the survival time of the cysts of Entamoeba histolytica are frequently found in the literature of this parasite (Yorke and Adams, 1926, Jones and Newton, 1950, and Chang, 1950), but the survival time of the trophoxoites of E. histolytica in culture is seldom discussed (Tsuchiya, 1945). The work reported here was therefore undertaken in the hope that a detailed te...

Exocytosis in Entamoeba is described in which the vacuole moves posteriorly and comes out of the tail or the uroid. Sometimes the whole vacuole comes out but more often only a part of it is expelled. The remaining part gets detached and moves back into the cytoplasm. Introduction A considerable amout of information is available on the method of food ingestion by Entamoeba (Zaman, 1970; Wkstphal...