Assertion: extracellular adenosine | /r/CapableOf | exert its action
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Source sentences:
text: Extracellular adenosine exerts its action by interacting with four members of the large family of seven transmembrane GPCRs denoted A1, A2A, A2B, and A3 (Fredholm et al., 2011; Gessi et al., 2011;