(A) Representative gating strategy for determining the mean fluorescence intensity of IL-1β, IL-8, TNFα, IL-1α, MIP-1α, IL-6, and MIP-1β expressed by amniotic fluid neutrophils and monocytes/macrophages. Mean fluorescence intensity of IL-1β, IL-8, TNFα, IL-1α, MIP-1α, IL-6, and MIP-1β expressed by (B) neutrophils and (C) monocytes/macrophage in amniotic fluid from women with preterm clinical chorioamnionitis who had either a negative amniotic fluid culture (blue bar plots) or a positive amniotic fluid culture (red bar plots). (N=6–7).