PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 20664064-2 2010 Here, we show that macrophages navigate in a gradient of the chemoattractant C5a through the release of adenosine triphosphate (ATP) and autocrine "purinergic feedback loops" that involve receptors for ATP (P2Y(2)), adenosine diphosphate (ADP) (P2Y(12)), and adenosine (A2a, A2b, and A3). Adenosine 104-113 hemolytic complement Mus musculus 77-80