[DNA content in atypical gliomesenchymal elements in chemical blastomogenesis of the cerebellum in white rats].

A microphotometric comparative study was carried out; DNA content was determined in the atypical glio-mesenchymal elements around the villous capsule surrounding the DMBA pill, in the cells of microastrocytoma and microglioblastoma induced by DMBA. It was found that the late stages of this type of chemical blastomogenesis of the cerebellum of albino rats were characterized by the preservation of a distinct diploid modal class, excluding cases when the process coursed in the direction of malignization at the early stages of tumour progress (microglioblastoma).