NOS2 and Sepsis: The purpose of this study was to elucidate the M1/M2 polarity of macrophages in peritoneal exudate (PE) cells on the basis of messenger RNA (mRNA) and protein profiles of marker enzymes (iNOS and ARG1), suppressor of cytokine signaling (SOCS) isoforms, cytokines, and chemokines after sepsis induced by CLP.