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Reduction of TNF-α and IFN-γ secretion by IL-10 in T cells stimulated with C1q-bearing immune complexes. T cells were incubated with immune complexes in the presence or absence of IL-10. Mean production ± s.e.m. is shown for three independent experiments. □, C1qIC 400 µg/ml; 
, IL-20 20 ng/ml + C1qIC; ▪, IL-10 100 ng/ml + C1qIC.
