the regional differences in efficacy of the two adenosine analogs suggest that l-pia , an a1 adenosine subtype agonist , may exert its effects through a1 adenosine receptors in the am , hipp , and cn , where a1 binding has been demonstrated , whereas neca , an a2 adenosine receptor agonist , may only be maximally effective in the cn where a2 adenosine binding sites are located .
C0031484
l-pia
C0001443
adenosine