Carbon Black Particle Exhibits Size Dependent Toxicity in Human Monocytes

Figure 3

Photomicrographs of THP-1 cells phagocytosing latex beads. THP-1 cells were incubated with TC-50 concentration of carbon particles (nano carbon: 591.4 μg/mL and micro carbon 687.1 μg/mL) for 4 h; then, latex beads were allowed to phagocytose by THP-1 cells for 1 h. After washing, fluorescent images were taken (magnification 400x).