Keywords breast neoplasms;E - cadherin;catenin;adenomatous polyposis coli;gene;immunohistochemistry;polymerase chain reaction;

• 乳腺肿瘤;上皮钙黏蛋白;连环素;结肠腺瘤息肉病;基因;免疫组织化学;聚合酶链反应;