In the acute Staphylococcus epidermidis cell‐free supernatant (SES)‐induced and zymosan‐induced sterile peritonitis models 18, 19, 20, neutrophils (CD11b+F4/80–Ly6G+) are rapidly recruited into the peritoneal cavity during the first few hours, but numbers subside after 24 h 18, 19, 20 (Fig. 1C). This evidence concerns the gene ITGAM and peritonitis.