Subcellular localization of XPA in the presence and absence of UV irradiation.

aThe number of “+” indicates the proportional distribution of XPA in the cytosol or the nucleus at individual parts of the cell cycle."+"符号的数量可表征XPA在细胞周期（cell cycle）各阶段于细胞质（cytosol）或细胞核（nucleus）内的比例分布情况。