Dopamine and noradrenaline levels in peripheral tissues of several mammalian species.

Tissue levels of dopamine (DA) and noradrenaline (NA) have been compared in atrium, spleen, mesenteric artery, vas deferens and renal cortex of sexually mature rats, guinea-pigs, ferrets, rabbits and cats. The results suggest the presence of dopaminergic autonomic axons in the cat renal cortex, as has been previously reported for the dog. Such nerves are probably sparse or absent in the kidneys of the other species examined.