C3a or C3a ( desArg ) alone exhibited no effect on the expression or secretion of IL-6 .
c3a or c3a ( desarg ) alone exhibited no effect on the expression or secretion of il-6 .
B-protein_molecule O B-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule O O O O O O O O O O B-protein_molecule O