[Distribution of monoaminergic structures in the amphibian kidney]

Distribution of monoaminergic structures in the kidney of two frog species has been studied by means of the fluorescent-histochemical method. Neural fibers containing catecholamines are revealed in the renal artery wall, in the portal veins walls, in the glomerular arteriole walls. No catecholamine-containing neural fibers have been revealed in the glomerular capillaries. The catecholamine-containing neural fibers tightly adjoining the walls of the proximal and distal parts of the nephron canaliculi have been revealed. The neural structures containing indolamines are not observed.