the conclusion is that the human blood platelet alpha-adrenoceptors , although resembling the properties of the alpha 2-subtype , form either a separate subclass of the receptors or a heterogeneous population of the alpha 2-subtype and an adrenergic receptor different from both alpha 1- and alpha 2-subclasses .
C0034784
alpha-adrenoceptors
C0034783
adrenergic receptor