PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 15239970-2 2004 In this study the adenosine A2A receptor agonist CGS21680 was used to evaluate adenosine receptor specificity and the interrelation of adenosine and GABA in the inhibition of inspiratory drive. 2-(4-(2-carboxyethyl)phenethylamino)-5'-N-ethylcarboxamidoadenosine 49-57 adenosine A2a receptor Homo sapiens 18-40