取代的2'，3'-二脱氧-5-三氟甲基尿嘧啶核苷类，它们的制备方法以及它们在医药方面的应用。

Substituted 2', 3'-dideoxy-5-trifluoromethylur idines, processes for their preparation and their use in medicaments.

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目的探讨对以羧甲基壳聚糖为载体的氟尿嘧啶微球体外释药特性的影响因素。

Objective to study the release characteristics of fluorouracil-loaded carboxymethyl chitosan microspheres (Fu-CMCS-MS) in vitro.

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它依赖于用 亚硫酸氢钠处理后，非甲基化的 胞嘧啶选择性的去氨基为 尿嘧啶，通常接着所选的靶向区域的PCR扩增。

It relies upon the selective deamination of unmethylated cytosine to uracil after treatment with sodium bisulphite, usually followed by PCR amplification of the chosen target region.

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