Responses by PBMCs from AIHA patients to RhD autoantigen.

Proliferation and IL-10 production were measured after PBMCs from AIHA patients 1 (○), 2 (●), 9 (▾), 10 (▿), and 11 (▪) were stimulated in vitro with purified RhD protein. Results from serial samples from each patient, taken one month to one year apart, are included. The proliferative and IL-10 responses are inversely correlated (R_s = −0.58, P < .005, n = 22).