Methods: Rats model of chronic experiment gastric ulcer was made by gastricserosa acetic acid instillation.
方法：采用乙酸制备大鼠慢性胃溃疡模型。
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Conclusion: oral administration or gastricserosa injection of beta-elemene can induce tumor apoptosis and may be useful for prevention and treatment of the lymph node metastasis in gastric cancer.