A. Compared to controls, placentas from poly(I:C)-injected mothers harbor increased numbers of CD69-expressing CD11b+, Gr-1+ and DBA lectin+ cells [F(1,12)=24.76, ***p=0.0003; n=5 litters per treatment group (7-8 deciduas pooled per litter)]. These are similarly increased in poly(I:C)-injected IL-6-/- mothers, suggesting that this effect occurs independently of IL-6 action [F(1,12)=21.87, **p=0.0005]. B. Representative flow cytometry spectra show increased total CD69+ cells in poly(I:C) decidual suspensions (left) and increased CD69+ CD11b+ cells from a non-erythroid parent population (right) C. Increased activation of decidual leukocytes corresponds with a trending increase in total CD69+ gene expression (# p = 0.08; n=9 placentas per treatment group (pooled from 3 independent litters)