[Comparative histofluorescent study of cardiac sympathetic nerves and adrenal catecholamines in rats under immobilization stress and administered a toxic dose of noradrenaline].

Changes in the adrenergic nerves of the rat heart and dynamics of adrenal catecholamines during immobilization stress and administration of a toxic dose of noradrenaline were found to be of the same type in general. They were manifested by a decrease of the number of fluorescent nerve terminals in the cardiac ventricles and an increase of catecholamine content in the adrenal glands 24 hours after the beginning of the experiment.