In FACS, EGCG could increase radiation resistance of normal cells, which was shown by a lower apoptosis peak. WI-38 showed 12.24% apoptosis by radiation, 5. 35% with EGCG before radiation.

• 细胞流式仪分析表明：EGCG能增加正常细胞对辐照的抗性，表现在阻抑凋亡峰的形成，使WI-38受辐照后的细胞凋亡量为12.；24%25，EGCG处理后再辐照的细胞凋亡量降至5