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MMP-9在肺腺癌和鳞癌组织中表达的免疫组化染色。MMP-9蛋白表达于肺癌细胞胞浆和胞膜，苏木素染色（SP, ×400）。A：阴性对照; B：腺癌染色阳性; C：鳞癌染色阳性。
MMP-9 expression in lung adenocarcinoma and squamous carcinoma. Immunohistochemical staining of MMP-9 protein was located in cytoplasm and cell membrane (SP, ×400). A: negative control; B: adenocarcinoma positive; C: squamous positive.
