克来夫定为嘧啶类似物，对HBV具有持续有效的抗病毒活性。
Clevudine is a pyrimidine analogue with potent and sustained antiviral activity against HBV.
使用含有BrdU的培养基培养细胞，这种嘧啶类似物能够在新dna和成时取代胸腺嘧啶。
When cells are cultured with labeling medium that contains BrdU, this pyrimidine analog is incorporated in place of thymidine into the newly synthesized DNA of proliferating cells.
卤代核苷酸如嘧啶类似物溴脱氧尿苷(BrdU)对活细胞和组织中的DNA进行标记是有用的。
Halogenated nucleotides such as the pyrimidine analog bromodeoxyuridine (BrdU) are useful for labeling nascent DNA in living cells and tissues.
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