EGCG inhibits pancreatic, colon, and lung cancer cell growth in a concentration- and time-dependent manner. Cell growth was determined in: A: pancreatic Panc-1, MIA PaCa-2, BxPC-3, B: colon HCT15, SW480, HT-29, and C: lung A549, H358, and HT1975 cancer cells, after treatment with escalating concentrations of EGCG for 24, 48 or 72 h. Results (mean ± SD) are expressed as percentage of control. D: Inhibitory Concentration 50 (IC50) values for pancreatic, colon, and lung cancer cells treated with EGCG for 48 h (mean ± SD).