Distribution and cellular localization of imidazoleacetic acid-ribotide, an endogenous ligand at imidazol(in)e and adrenergic receptors, in rat brain

These data indicate that IAA-RP contributes to the neurochemical phenotype of many neuronal populations and further supports our suggestion that, in autonomic structures, IAA-RP may serve as a chemical mediator in complex circuits involved in blood pressure regulation and, more generally, sympathetic drive.