Fig. 7.

The effect of Zn and Cu on macrophage-mediated killing of A. baumannii. The survival of A. baumannii ATCC 17978 cells in the presence of THP-1 human monocyte-derived macrophages that were either treated with 50 μM Zn, 50 μM Cu or 50 μM Zn + 50 μM Cu was compared to survival of A. baumannii ATCC 17978 cells in the presence of untreated THP-1 cells. The data are the mean of biological triplicates (± SEM). Statistical analyses were performed using a two-tailed Student’s t-test; ns = not significant, * = p < 0.05 and ** = p < 0.01