Objective To observe the effects of temporary acid exposure on cell proliferation and extracellular signal-regulated protein kinase (ERK) activity in normal human esophageal epithelial cells in vitro.

• 目的观察酸对人正常食管粘膜上皮细胞的增殖和细胞外信号调节蛋白激酶(ERK)表达水平的影响。