Fig. 6

Effects of psoralen on gene expression of ER-stress. a The mRNA levels of key gene in ER-stress by different doses of psoralen treatment for 48 h. b The mRNA levels of key gene in ER-stress by 40Μm psoralen for 6 h, 12 h and 24 h. c The mRNA levels of ER functional gene by 40Μm psoralen for 6 h, 12 h and 24 h. Values are mean ± SD (n = 3) and * is means compared to the Con group, *p < 0.05; **p < 0.01; ***p < 0.001