Ⅱ.肿瘤标记物肿瘤标记物(Tumor marker)是当今世界人们致力搜索的肿瘤早期诊断物。它的生物学基础是:当正常组织突变成肿瘤细胞后,不但在细胞生物性状和组织形态上发生了改变,而且由于癌变过程中遗传物质突变,肿瘤细胞在错误的部位和不恰当的时间,以异常的浓度产生、分泌或释放瘤细胞结构一部分的某些特异性物质。这些物质主要是肿瘤抗原,其次是激素或酶形式的蛋白质。 Ⅱ. Tumor marker Tumor marker is an early diagnosis of tumors in the world today. Its biological basis is: when normal tissue is mutated into tumor cells, not only changes in cellular biological traits and tissue morphological changes, but also due to mutations in the genetic material during carcinogenesis, tumor cells in the wrong parts and inappropriate time , To produce, at an abnormal concentration, secretes or releases certain specific substances that form part of the tumor cell structure. These substances are mainly tumor antigens, followed by hormones or enzyme forms of the protein.