PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 12606638-2 2003 Small GTP-binding protein Rac1 is activated by various proinflammatory substances and regulates superoxide generation in endothelial cells. Superoxides 96-106 Rac family small GTPase 1 Homo sapiens 26-30