Ultrastructure de I'erythrocyte du triton Pleurodeles waltlii Michah

The erythrocytes of the newt Pleurodeles wultlii Michah are characterized by the presence of DAB negative cytoplasmic autophagic-type vacuoles; these vacuoles have an intense acid phosphatase activity and are expelled by exocytosis. Golgi, rough endoplasmic reticulum, and mitochondria ate not well developed and generally present an altered form; the nucleus is characterized by condensed chromatin without pseudoperoxidase activity. These results suggest that the erythrocyte of Pleurodeles seems to have a low metabolism and to partly mature in the circulating blood.