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细胞用蛋白19片段（又称CA21-1）及癌胚抗原（CEA）是一种新的肿瘤标志物，为探讨CA21-1及CEA在肺癌诊断中的价值，1998－01～1998－09我们测定20例肺癌病人血清CA21-1和CEA的变化，现报道如下．1资料和方法1.1研究对象肺癌组：经组织学或细胞学证实的肺癌病人20例，男13例，女
The cellular protein 19 fragment (also known as CA21-1) and carcinoembryonic antigen (CEA) are new tumor markers for the purpose of exploring the value of CA21-1 and CEA in the diagnosis of lung cancer. 1998-01-1998-09 The changes of serum CA21-1 and CEA in 20 patients with lung cancer were measured and are reported as follows. 1 Materials and Methods 1.1 Research objects Lung cancer group: 20 cases of lung cancer patients confirmed by histology or cytology, 13 males and females