PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2153739-8 1990 Thus, endotoxin-activated serum can prime cellular responsiveness for membrane depolarization and superoxide production in response to FMLP and to C5a. Superoxides 98-108 complement C5a receptor 1 Homo sapiens 147-150