Fig. 1.

Effect of [6]-gingerol on the proliferation (a) and invasion (b) of AH109A cells. [6]-Gingerol was dissolved in ethanol. The [6]-gingerol solution was added to the culture medium at a final ethanol concentration of 0.2%. The proliferative activity of AH109A cells (a) was determined by the incorporation of [methyl-³H]thymidine and the invasive activity (b) by invasion assay as described in “Materials and methods” section. Data are the means ± SEM of six wells (a: proliferation) and 10 areas (b: invasion). Values not sharing a common letter are significantly different at p < 0.05 by Tukey–Kramer multiple comparisons test