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T-cell activation is not altered by packed red blood cell supernatant. Peripheral blood mononuclear cells were exposed to control media (Ctl) or packed red blood cell supernatant after 1 day or 42 days of storage, with leukoreduction (LR) or without leukoreduction (NLR) ± anti-CD3 stimulation. Compiled data from four independent experiments expressed as mean ± SEM.
