the rank order of potency of the agonists on either side was consistent with the presence of an adenosine a2-receptor , but the apical and basolateral receptors differed in both their ability to stimulate increases in adenosine 3',5'-cyclic monophosphate , and their susceptibility to down-modulation by chronic exposure to 5'- ( n-ethylcarboxamido ) adenosine in culture .
C0001443
adenosine
C0050789
n-ethylcarboxamido