Effect of EGCG on mesothelioma cell growth. The mesothelioma cells were treated with EGCG (10 μM to 500 μM) for 24 h. The viability of the cells was evaluated with cell counting kit assay. Values are expressed as absorbance at 450 nm. The results are expressed as Mean ± S.D. (n=6). **P < 0.01, *P < 0.05.