Background/Aims: To study the expression of CD. ,RA and CD45RO in normal gastric mucosa and gastric cancer, and evaluate the relationship between memory T cell count and TNM staging in gastric cancer.

• 目的：研究CD45RA、CD45RO在正常胃粘膜及胃癌中的表达，探讨记忆T细胞与胃癌TNM分期的关系。