This receptor, which is activated by the biogenic amine histamine, is expressed throughout the body, to be specific, in smooth muscles, on vascular endothelial cells, in the heart, and in the central nervous system.
This receptor is expressed throughout the body on vascular endothelial cells and in the central nervous system. This was in the heart. This was in smooth muscles. This was to be specific. This receptor is activated by the biogenic amine histamine.