肿瘤标志物(tumor markers,TM)是指肿瘤组织和肿瘤细胞由于基因或抑癌基因和其他肿瘤相关基因及其产物异常表达所产生的抗原和生物活性物质,而在正常组织或良性疾病时不表达或表达甚微,它反映了肿瘤的发生和发展过程及肿瘤相关基因的激活或失活程度,可在肿瘤患者的组织、体液和排泄 Tumor markers (TM) refer to antigens and biologically active substances produced by tumor tissues and tumor cells due to the abnormal expression of genes or tumor suppressor genes and other tumor-related genes and their products, but not in normal tissues or benign diseases Expression or expression is very small, it reflects the occurrence and development of tumor and tumor-related gene activation or inactivation of tumor tissue in patients with, body fluids and excretion