Conclusions Tumorigenicity and metastatic potential can be improved in human breast carcinoma xenografts using intact fresh tumor tissue and orthotopic grafts.
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方法：采用组织酶谱分析和DQ明胶原位酶谱分析方法检测乳腺癌组织中明胶酶活性。
Methods Gelatinolytic activity was detected with tissue zymography and in situ zymography technique using DQ-gelatin.
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