[Comparative characteristics of the cyto- and angioarchitectonics of the inferior olives and the dentate nuclei of the cerebellum during human prenatal ontogenesis].

The development of the inferior olives and the denticulate nuclei of the cerebellum and their capillary network were studied in human fetuses 4--10 months old. General regularities in the formation of the inferior olives and the denticulate nuclei of the cerebellum were stated. During prenatal ontogenesis, nuclear cytoarchitectonics becomes more complex that is especially evident after 7th month of the intrauterine development: the density of the neural cells arrangement decreases, while the density of the glia arrangement and that of the glial index increases. At the same time, essential alterations occur in the capillary network: int acquires three-dimensional structure, becomes longer with more complicated interrelations between the neural cells and the capillaries.