[Cytological study on neuronal lipofuscin in the CNS of the Rana esculenta].

Neuronal lipofuscin has been found in adult Rana e., and in tadpoles at the larval stage with external gills, larvae with internal gills and front legs, and larvae with front and back legs. The lipofuscin granules were positive at many histochemical tests and they had an autofluorescence at 450-470 nm The AA. plan to better define the ultrastructural characteristics and the anatomotopographic localization of the lipofuscin observed in future electron microscope studies.