| 释义 |
thymidine Biochem.|ˈθaɪmɪdiːn|
[f. thymine + -idine.]
A pyrimidine nucleoside, C5H9O3·C5H4N2O2, in which the base is thymine and the sugar deoxyribose, and which is obtained by the partial hydrolysis of DNA.
1912Jrnl. Biol. Chem. XII. 414 Barium salts of a hexo-cytidine diphosphoric acid and a hexo-thymidine diphosphoric acid were obtained. 1931Levene & Bass Nucleic Acids 335/1 (Index), Thymidine. See Thymine desoxyribonucleoside. 1963New Scientist 21 Mar. 616/2 Before a cell can divide, it has to duplicate its own normal complement of DNA and this it synthesises from many different starting products, one of the most important being thymidine. 1978Bull. Amer. Acad. Arts & Sci. Feb. 17 If, during the culturing process which forms an essential feature of the preparation of cells for examination of their karyotype, tritiated thymidine (a radioactive precursor of DNA) is added, the resultant metaphase chromosomes become radioactively labeled to a degree that is a function of their recent activity in synthesizing DNA. |