The purpose of this study is to evaluate the safety and effectiveness of autologous gp96 treatment of gastric cancer.

Inclusion Criteria:

1. Disease characteristics: Histologically confirmed gastric carcinoma: clinical stage III (according to the Japanese gastric cancer classification), must have undergone radical resection
2. Able to read and understand the informed consent document, must sign the informed consent
3. Age: 18 to 75 years old
4. Availability of at least 0.5 g tumor sample
5. ECOG ≤1；life expectancy >=12 weeks, able to comply with study-related procedures
6. Adequate bone marrow function including the absence of lymphopenia (ANC > 1,500/ mm3; Hemoglobin > 10g/dL ; platelet count >100,000/mm3), adequate liver function (serum glutamic oxaloacetic transaminase/ aspartate aminotransferase [AST], alanine amino transferase [ALT] <2.5 times institutional upper limit of normals [IULNs] and bilirubin (total) <1.5 times IULN), and adequate renal function (BUN and creatinine <1.5 times IULNs)
7. Normal heart function
8. NOT participate in ANY other clinical trials within 4 weeks prior to vaccination.

Exclusion Criteria:

1. Unable to get the informed consent
2. Female patients who are pregnant or breastfeeding
3. Progression prior to treatment as determined by the principal investigator
4. Transplant recipient
5. Patients currently diagnosed with Human Immunodeficiency Virus or other active uncontrolled infection
6. Unstable or severe intercurrent medical conditions
7. Patient with allergic constitution
8. Patients with any systemic disease needed to be treated with immunosuppressant or Corticosteroids.