Table 2.

Synthetic PAH is as effective as natural PAH to increase dxr cytotoxicity against melanoma cells. IC₅₀ values were calculated using GraphPad Prism 6 software. Mean ± SEM of 3 independent experiments are presented.

Heading Treatment		IC50 (µM)
		With Natural PAH	With Synthetic PAH
MeWo cells	Dxr (at 20 µM PAH)	0.5 ± 0.1	1.1 ± 0.4
	PAH at 2 µM Dxr	6.6 ± 0.8	8.1 ± 1.3
A375 cells	Dxr (at 20 µM PAH)	0.5 ± 0.1	0.6 ± 0.2
	PAH at 2 µM Dxr	12.4 ± 4.9	12.4 ± 2.3