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Effects of high (10 μg/mL) and low (1 μg/mL) exposure levels of purified S. aureus LTA on (a) IL-10, (b) PD-L1, (c) TNFα, and (d) HLA-DR expression in human PBMCs (n = 4). Protein expression was determined using either flow cytometry (PD-L1, HLA-DR) or ELISA (IL-10, TNFα. Data are displayed as means with error bars depicting standard deviation. Brackets indicate statistical comparisons between treatments. * p < 0.05, **** p < 0.0001.
