Figure 1. Effect of UVB exposure on the viability of SRA01/04 cells. SRA01/04 cells were irradiated at indicated energies of UVB and cultured further for 12 h or 24 h, and viable cell numbers assayed (n=4). Cell viability is shown as % of control (sham-irradiated culture). Essentially the same results were obtained by three independent experiments and representative data are shown. **p<0.01; *p<0.05, compared to controls.