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Class II MHC and PD-L1 expression by PerC Mϕs. Cells were analyzed ex vivo or after 48 hrs in unstimulated (CM) or stimulated (αCD3) cultures +/− the iNOS inhibitor 1-MA. MFI indices above histograms as described in Figure 4. Data represent the average +/− SEM of 3 or more experiments.
