PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8943870-4 1996 PAF did not stimulate respiratory burst activity directly, but caused a rapid (maximal at 10 minutes) and concentration-dependent (EC50 50.2 nmol/L) increase in N-formyl-methionyl-leucyl-phenylalanine (fMLP)-stimulated superoxide anion release. Superoxides 219-235 PCNA clamp associated factor Homo sapiens 0-3