Comparison of IFN-γ production by group 2 (sc) dams carrying live or dead foetuses. Maternal lymph node, spleen and PBMC samples were collected at post mortem examination. Following stimulation with NCA for 4 days (37°C in a humidified 5% CO2 atmosphere), ELISA were performed to determine the concentration of IFN-γ produced. The data is expressed as ng/ml. –– Live, –– Dead.