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. 2012 Sep 19;7(9):e45183. doi: 10.1371/journal.pone.0045183

Figure 4. Extra-cellular dopamine (DA) content as determined by HPLC assay.

Figure 4

After cells were exposed to UVB light (120 mJ/cm2) or non-UVB light and post-cultured for 24 h, cell culture medium from melanoma A375 cells (A) and SK-MEL-28 cells (B), dopaminergic neuronal SH-SY5Y cells (C) and PC12 cells (D) with or without α-Syn expression were subjected to HPLC assay for measuring DA level. *: p<0.05 as compared to its non-UVB control (a) or non-α-Syn control (b). Dox  =  doxycycline.