Table 2.

The effect of UVB on HaCaT cell viability (${\displaystyle \overline{\chi }}$ ± s, n = 3).

UVB-irradiation (mJ/cm2)	Cell survival rate
0	100.00 ± 0.00
6	103.55 ± 1.38
12	103.40 ± 4.27
18	100.38 ± 4.39
24	96.98 ± 2.28
30	70.05 ± 4.75*
36	56.71 ± 1.73*

Note:

^*p < 0.05; compared with Normal.