Cardiac alpha adrenoceptors.
D000663:Amphibians; D000818:Animals; D006321:Heart / Q000502:physiology; D006801:Humans; D008322:Mammals; D009200:Myocardial Contraction / Q000187:drug effects; D009206:Myocardium / Q000378:metabolism*; D011869:Radioligand Assay; D011941:Receptors, Adrenergic / Q000378:metabolism*; D011942:Receptors, Adrenergic, alpha / Q000187:drug effects / Q000378:metabolism*; D013045:Species Specificity
D011941:Receptors, Adrenergic; D011942:Receptors, Adrenergic, alpha