Fig. 2.

Cytotoxicity of the interactions of EGCG with Zn²⁺ on LNCaP cells by MTT assay (n=7)

(a) After different concentrations of Zn²⁺ were added, LNCaP cells were incubated for 2 h at 37 °C, and then mixed with 80 μmol/L EGCG for 24 h; (b) After 80 μmol/L EGCG was added, LNCaP cells were incubated for 2 h at 37 °C, then mixed with different concentrations of Zn²⁺ for 24 h; (c) After 80 μmol/L EGCG and different concentrations of Zn²⁺ were added at the same time, LNCaP cells were incubated for 24 h at 37 °C