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  Indian J Med Microbiol
 

Figure 1: Dose-effect curves of EGF and shikonin. In the test of MTT assay, HaCaT cells were incubated with different concentrations of EGF (0, 5, 10, and 25 ng/ml) and shikonin (0, 1, 5, 10 μmol/L) separately. Cell viabilities of them at 24 h, 48 h were calculated. n = 6, * P < 0.05, ** P < 0.01 versus control group. EGF: Epidermal growth factor

Figure 1: Dose-effect curves of EGF and shikonin. In the test of MTT assay, HaCaT cells were incubated with different concentrations of EGF (0, 5, 10, and 25 ng/ml) and shikonin (0, 1, 5, 10 μmol/L) separately. Cell viabilities of them at 24 h, 48 h were calculated. <i>n</i> = 6, * <i>P</i> < 0.05, ** <i>P</i> < 0.01 versus control group. EGF: Epidermal growth factor