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. Author manuscript; available in PMC: 2015 Aug 1.
Published in final edited form as: J Pineal Res. 2014 Jun 28;57(1):90–102. doi: 10.1111/jpi.12146

Figure 1.

Figure 1

Melatonin, NAS, 6-OHM, AFMK, and 5-MT increase viability of HEKn keratinocytes exposed to UVB. Data are calculated by subtracting viability from non-irradiated cells which means we considered the anti-proliferative effect of melatonin and its derivatives on this cell. Data were analyzed using student t-test, * p<0.05, ** p<0.01, and *** p<0.001.