Research Article

Curcumin Protects Skin against UVB-Induced Cytotoxicity via the Keap1-Nrf2 Pathway: The Use of a Microemulsion Delivery System

Figure 2

HaCaT cell viability as measured by MTT (in percentage) after 24 h treatment. Cell viability was expressed as the percentage of the untreated control (dashed line) as the function of treatment concentration. Average values are presented in the figure with standard deviation of the mean ().