Histochemical localization of succinate dehydrogenase in the mitochondria of Paracoccidioides brasiliensis.

The succinate dehydrogenase activity of Paracoccidioides brasiliensis was investigated histochemically by electron microscopy. The reaction product of this enzyme was demonstrated in some membranous structures of organelles interpreted as mitochondria. This enzyme shows very active oxido-reduction in Paracoccidioides brasiliensis mitochondria during, 3, 6, and and 9 days of culture.