Age changes in the tigroid substance of neutrons of the lateral preoptic nucleus of hypothalamus under different light modes

The article presents analysis of the results original histochemical studies tigroid substance neurons lateral preoptic nucleus hypothalamus in mature and old rats under influence different light modes. In all observations, was located cytoplasm form individual granular formations sizes shapes. amount is greater than older rats. At same time, it should be noted that experimental conditions significantly affected particular, deprivation, optical density specific staining for increased (p<0,001), stimulation, on contrary, probably decreased (p<0,001).