血清核糖核酸酶的测定作为各种癌和癌前期患者的生物化学标志越来越受到人们的注意。原来已知此酶的作用是在蛋白质合成中分裂RNA,但近来研究证明它有更广泛的细胞生理作用,并可用于癌瘤的早期诊断。作为癌瘤早期诊断的证据有:(1)在肿瘤发生率很高的小鼠株中,肿瘤发生前可出现核糖核酸酶活性升高;(2)带有移植肿瘤的小鼠,其血浆核糖核酸酶活性升高;(3)在23例未经治 Serum ribonuclease assays are gaining more and more attention as biochemical markers of various cancers and precancerous patients. It was previously known that this enzyme cleaves RNA in protein synthesis, but recent studies have shown that it has a broader cellular physiology and can be used for the early diagnosis of cancer. As evidence of early diagnosis of cancer: (1) in a high incidence of tumor in mice, RNase activity may appear before tumorigenesis; (2) mice with transplanted tumors, the plasma ribose Nuclease activity increased; (3) in 23 cases without treatment