结论：胃肠道癌患者血清中抗癌胚抗原(CEA)抗体的检出率较高，这些抗体可作为胃肠道癌的一种肿瘤标志物。

Conduskm: in this study, a high number of gastrointestinal malignancies patients have circulating CEA specific antibodies in their sera and these antibodies may be used as diagnostic markers.

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用荧光和紫外吸收光谱法，研究了抗癌药物甲氨喋呤(MTX)与牛血清白蛋白(BSA)的相互作用。

The interaction of methotrexate (MTX) and bovine serum albumin (BSA) was studied by fluorescence and absorption spectra.

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