Research Article

The Influence of Monoamine Oxidase Variants on the Risk of Betel Quid-Associated Oral and Pharyngeal Cancer

Figure 1

The effects of different arecoline concentrations on the viability of HGF and Ca9-22 cells for 24 h and 48 h. (a) HGF cells viability. (b) Ca9-22 cells viability. An asterisk () indicates a statistically significant difference ().
(a)
(b)