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. 2017 Oct 11;18(10):2120. doi: 10.3390/ijms18102120

Figure 4.

Figure 4

Effect of extremely low frequency electromagnetic fields (ELF-EMFs) on melanogenesis of melanocytes after exposed to ELF-EMFs for 72 h. After ELF-EMFs exposure, melanin content and tyrosinase activity were determined. (A) Melanin content was detected by the melanin content assay; (B) Tyrosinase activity was measured by the tyrosinase assay. Each bar represents the mean ± standard error of independent experiments performed in triplicate (n = 3). * p < 0.05, ** p < 0.01, compared to the control.