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. 2017 Dec 9;22(12):125004. doi: 10.1117/1.JBO.22.12.125004

Fig. 7.

Fig. 7

NORR of cells in the stratum spinosum layer of the viable epidermis treated with either vehicle only or sun filter formulation and exposed to either 0 or 20  J/cm2 (1 MED) of UVA irradiation. Bars correspond to mean NORR measurement of cells from N=3 fields of view, and error bars represent ±1 standard deviation. Statistical significance determined by pair-wise student’s t-test corrected using Holm’s method, annotated with * if p<0.01 and ** if p<0.005.