Histological characteristics of neurons of rats neocortex and hippocampus in late ontogenesis

The purpose of the work is a comparative study of the histological characteristics of the pyramidal neurons of the hippocampus, frontal and parietal frontal cortex of 2.5-year-old rats. The experiments were performed on 12 males of outbred white rats with an initial weight of 270 ± 20 g. Material was taken 2.5 years after birth. At the late stages of postnatal ontogenesis, destructive changes occur in neurons, which are manifested at the histological level by a decrease in size and deformation of the pericaryons, hyperchromatosis, hypochromatosis and wrinkling of cells. The most obvious violations in the parietal cortex, the least in the hippocampus.