Safety and Efficacy of γδ T Cell Against Gastric Cancer

Inclusion Criteria: 1. Age:30-75 2. Karnofsky performance status \>50 3. Diagnosis with gastric cancer based on histology or the current accepted radiological measures. 4. Classification tumor,nodes,metastasis-classification(TNM) stage: Ⅱ,Ⅲ,Ⅳ 5. Patients who have a life expectancy of at least 12 weeks 6. Ability to understand the study protocol and a willingness to sign a written informed consent document Exclusion Criteria: 1. Any significant medical or psychiatric illness that would prevent the patient from giving informed consent or from following the study procedures. 2. Known human immunodeficiency virus (HIV) infection. 3. Active and/or severe infection (e.g. tuberculosis, sepsis and opportunistic infections, active hepatitis B virus (HBV) or active hepatitis C virus (HCV) infection). 4. Other serious underlying medical conditions, which, in the Investigator's judgment, could impair the ability of the patient. 5. Pregnancy