[Morphologic differences in the cutaneous receptors of low- and high-excitability lines of rats]

By means of methylene blue staining of the rat plantar skin, receptor terminals in lines with low- and high-excitability have been revealed with a subsequent morphometric and cytophotometric estimation of the dye sorption degree. Divergence of the signs at selection according to excitability of the nervous-muscular apparatus is spreading to the peripheral nervous system elements, affecting its structural and tinctorial indices. In rats with low threshold of excitability increasing size of the receptor plates and areas of the receptors division is observed in comparison to the animals with high threshold of excitability. The receptors in the former line are stained less intensively than the receptors in the latter line.