Objective: Apoptosis of LoVo cells, a colon carcinoma cell line, in culture induced by green tea aqueous extracts was studied. Methods: Inhibition of LoVo cell growth by green tea aqueous extracts is observed by MTT method and the Apoptosis is detected by gel electrophoresis, transmissional electron microscope and flow cytometry. Results: After the LoVo cell line is treated by green tea aqueous extracts, it was showh that: 1) The growth of LoVo cells was inhibited In vitro. 2) Typical nuclear condensation a...