these data indicate the involvement of an extracellular membrane-bound adenosine receptor , possibly of the a1 subtype since n6-cyclohexyladenosine , an a1 adenosine receptor agonist , was more efficient than 5'-n-ethylcarboxamide-adenosine , a rather selective a2 adenosine receptor agonist .
C0001443
adenosine
C0050789
5