Receptor subtype | Agonists# | Antagonists# | Distribution |
A1 | CHA>NECA>>CGS21680 | DPCPX>XAC>CGS15943>SPT | Heart, adipocytes, respiratory smooth muscle, neutrophils, kidney, hippocampus, cortex |
A2A | CGS21680≈NECA>>CHA | ZM241385≈SCH58261≈CGS15943≥XAC>DPCPX | Platelets, neutrophils, vasculature, pancreas, mast cells, striatum |
A2B | NECA>CHA>>CGS21680 | XAC>CGS15943>DPCPX | Vascular, intestinal and respiratory smooth muscle, chromaffin tissue, mast cells, brain |
A3 | 2-C1-IB-MECA>APNEA>NECA≈CGS21680 | MRS1220≈IABOPX>L268605>>XAC>DPCPX | Testis, kidney, lung, mast cells, eosinophils, neutrophils, heart, cortex, striatum |