Cytokine production by decidual mononuclear cells after 24 hours of culture. Cytokines and chemokines were quantified in 24-hour decidual cell supernatants without any stimulation. Results are expressed in pg/ml, as measured with Luminex technology. Cytokines were classified in 3 groups according to their abundance. Bars represent the mean value of 13 different donors and the error bars indicate the SEM.