Objective:To investigate drug-resistance mechanism of the camptothecin(HCPT)-resistant stomach cancer cell line SGC-7901/HCPT.

目的：探讨人胃癌耐羟基喜树碱细胞株即SGC-7901/HCPT的耐药机制。

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Purpose: to study the expression of MMP 7 gene in gastric cancer tissue and different stomach cancer cell line and explore its clinical significance.

目的：研究基质金属蛋白酶7基因(MMP 7)在胃癌组织及不同分化程度的胃癌细胞中的表达情况，探讨其临床意义。

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Methods: DCs were derived from cord blood monocytes, then were pulsed by tumor associated antigen (TAA) extracted from human stomach cancer S-180 cell line.

方法：采用脐带血来源的单核细胞制备树突状细胞，体外经s - 180细胞肿瘤相关抗原(TAA)致敏后免疫小鼠，一周后接种s - 180细胞株。

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