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Current medication of AAV patients is not associated with PD-L1 expression. Percentages of PD-L1+ monocytes (A–C) and PD-L1 expression of monocytes stimulated with IFNγ for 24 hours (D–F) from AAV patients subgrouped depending on their medication. Mann-Whitney test (A–D) and unpaired t-test (E, F) were applied. MFI, mean fluorescence intensity; PD- L1, Programmed death-ligand 1; ns, statistically not significant.
