Specific induction of IL-10 secretion by splenic T cells from a patient with AIHA in response to purified Rh protein or derived peptide. Splenocytes were stimulated in culture with purified Rh protein, peptides 72H-86L and 252A-266S, or no antigen, and proliferation and secretion of the cytokines IL-10, IL-4, and IFN-γ were measured. Data are presented as mean plus or minus standard error.