IA IL-1β exposure increased the frequency of TNFα+ neutrophils in decidua parietalis. A) Frequency of TNFα-producing cells in both CD45+ and CD45− cell populations and their relative distribution: monocytes (mono)/macrophages (macro) (white), neutrophils (gray), and NK cells (black). B) Representative dot plots show TNFα production by NK cells, neutrophils, and mono/macro cells in both controls and animals at 24 h after exposure to IA IL-1β. SSC, side scatter.