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The acquired immune system biomarker expression levels of whole blood cell cultures exposed to GONPs in the absence or presence of PHA: (a) IL-10 expression levels and (b) IFNγ expression levels. Data represents mean ± SD with n = 4. Bars marked with symbols indicate significant differences (p < 0.01). Significance demarcated by: *—significantly different compared to negative control (p < 0.001), #—significantly different compared to positive control (p < 0.001).
