PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8921800-8 1996 The AV nodal effects of draflazine, ITU, EHNA, and PD81,723 were reversed by the A1 adenosine receptor antagonist 8-cyclopentyltheophylline and adenosine deaminase, implicating endogenous adenosine acting at the A1 adenosine receptor. draflazine 24-34 adenosine receptor A1 Cavia porcellus 81-102