[Morphogenesis of neural derivates after transplantation of the rat embryo telencephalon to the testis of sexually mature animals].

Some aspects of proliferation (the number of DNA synthesizing cells) and differentiation of forebrain (telencephalon) isolated from a 14.5 day old rat embryo and then transplanted into the testis of syngenetic animals were studied for 90 days. The embryonic cells proliferated for 12 days then their differentiation started and many types of differentiated neuronal and glial cells of the definitive brain were found in the transplant. Histological structure of the transplant was without cytoarchitecture of cerebral cortex. The comparison of the obtained data and literature allows us to make a conclusion that realization of morphogenetic potencies of the rat forebrain anlage are the same not only after transplantation into definitive brain, but after being transplanted into different ectopic places; including testis.