Pre-incubation with Ni-Cu WF impairs phagocytosis.

<p>RAW 264.7 cells were treated with 50 µg/ml welding fume suspensions for 3 or 6 h or cytochalasin D (Cyto D) for 3 h. Cells were washed, pHrodo Red <i>E. coli</i> BioParticles were added for 2 h, and plates were read to measure changes in fluorescence. Error bars represent the mean ± SD (n = 4). *, p<0.05 compared to PBS controls.