Assertion: adenosine's receptor | /r/HasProperty | autoradiography
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Source sentences:
text: With the use of the selective ligands cyclohexyladenosine (CHA) or N6-p-hydroxy-phenyl-isopropyl-adenosine (PIA), adenosine A 1 receptors were first identified by autoradiography in sections of human and guinea pig kidney (257, 358).