Table 2. Cell cycle distribution of ERK inhibitor (U0126) pretreated HaCaT keratinocytes 24 h after indicated UVB irradiation.

	G0/G1	S	G2/M
Control	64.7 ± 0.65	16.6 ± 0.81	18.7 ± 0.20
HI1 UVB	32.7 ± 0.89	42.2 ± 0.64	25.1 ± 0.79
LI2 UVB	33.9 ± 1.01	40.7 ± 0.92	25.4 ± 1.13

¹HI: High irradiance.

²LI: Low irradiance.

Presented as (mean ± SD) from 3 independent experiments.