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让她降落铜虫 (正式写手)
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[求助]
求一段关于细菌胞内DNA以及总DNA提取的完整翻译
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| In particular, DNA was extracted from bacterial colonies picked up from plates, and resuspended in 1.0mL of sterile water up to obtain 10的9次方 harvest cells useful for DNA extraction. Cellular density of water bacterial suspensions was spectroscopically measured (three replicates) by optical density at 600nm. TotalDNA (e.g., genetic material of live bacteria and/or released from inactivated bacteria) was extracted from UV/H2O2 treated watersamples collected at each time. Aliquots (1.0 mL) of each water sample were centrifuged for 10min at 14,000rpm in order to collect and concentrate genetic material up 0.25 OD (600nm). Pellets were resuspended in 180.0 μL of extraction buffer (ATL) and used for DNA extraction. |
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让她降落: 金币+30, ★★★★★最佳答案, 谢谢帮助! 2016-03-31 23:57:23
让她降落: 金币+30, ★★★★★最佳答案, 谢谢帮助! 2016-03-31 23:57:23
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这个我最熟悉,就给你说说吧(不一定严格按字面翻譯): 具体地说,DNA是从培养板挑取的细菌菌落中提取的:提取菌落并悬浮于1.0mL无菌水中,得到10的9次方细菌,用于DNA提取。水中细菌悬浮液的细胞密度用分光光度计于600 nm 读取OD值(即OD600值,重复三次)。 用 UV/H2O2 处理水样品,不同时间后收集水样,提取总DNA(从活细菌和/或灭活细菌释放的遗传物质)。每个水样本的等分试样(1.0mL)以14,000 rpm离心10分钟,以便收集并浓缩遗传物质,使OD600的读数高达0.25。离心沉渣悬浮于180.0微升提取缓冲液(ATL)用于DNA提取。 |
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