Figure 2
From: Effects of wound dressings containing silver on skin and immune cells

Cytotoxicity and contact inhibition of silver dressings. Change in viability of HaCaT keratinocytes (A) or NHDF (B) after 24, 48, and 72 h of treatment with dressing extracts diluted one to tenfold in a cultivation media measured by MTT assay. Bars represent mean of three independent experiments ± SD. **p < 0.01, *p < 0.05. (C) Contact inhibition of HaCaT cells after incubation for 6 h with pieces of dressings. White zones mark areas of dead cells. Images are representative of three independent experiments.