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. 2016 Apr 30;9:254. doi: 10.1186/s13104-016-2047-x

Fig. 1.

Fig. 1

Comparison of allantoin, arbutin, glycolic acid, and hyaluronic acid: a suppression of melanin production at 0.1, 1, and 5 mg/ml in a 5-day culturing. b Cell quantification after a 5-day culturing. *P < 0.05, **P < 0.01, as determined by one-way ANOVA