Figure 1.

Viability of cells after exposure to epigallocatechin gallate (EGCG) and green tea extract (GTE) in four concentrations. MTT assay (A,B) and neutral red uptake (NRU) test (C,D) of proliferating (A,C) and differentiated (B,D) Caco-2 cells. The viabilities of treated cells are expressed as the percentage of untreated controls (100%). Values represent means ± SD of three samples. Significance of differences from the control was determined by ANOVA followed by a Dunnett’s test (* p < 0.05, *** p < 0.001).