<p>The expression levels of UV-DDR-related is-ncRNA candidates were examined by qRT-PCR in N2 and <i>xpa-1</i> deletion mutant before and after UV irradiation (100 J/m<sup>2</sup>). Results were normalized to the expression level of U6 and compared with the level of the wild type without UV irradiation. Data presented are means ± SEM of at least three independent experiments. *: p<0.05, **: p<0.01, ***: p<0.001.</p
