Using a model of sterile inflammatory peritonitis, induced by intraperitoneal injection of zymosan, a toll-like receptor 2 (TLR2) ligand, we compared the consequence of induction by high- or low-dose zymosan treatment upon the nature, origin, and abundance of various immune cell types from the peritoneal cavity at 24 h (15, 16). This evidence concerns the gene TLR2 and peritonitis.