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【求助/交流】问一个跑胶的问题
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 跑胶的时候，想要图上的第二条带的产物，跑胶的方向如图，文献上的有两个东西要插入胶中，我就是想理解下这个 glassfiber microfilters 和dialysis membranes 是不是我图上那样的前面顺序，还是先放d再放g 文献的原文是：Nanocrystal molecule purification: Agarose gels (3 ± 4%) were used to analyze and isolate the desired structures. Tris-borate EDTA (1X, TBE) was used as the running buffer. Glycerol loading buffer (6X) was used to load the samples onto the gels.[18] After electrophoresis, samples were isolated by slicing the gel in front of the desired band and inserting glassfiber microfilters (Whatman GF/C) that were backed with dialysis membranes (Spectra/Por, MWCO: 10000). The bands were incorporated into the paper by electrophoresis. The filter/membrane pieces were then placed with the filter facing down into 0.5-mL Eppendorf tubes which had been pierced at the bottom with 26-gauge needles. These Eppendorf tubes were fitted into 1.5-mL Eppendorf tubes and centrifuged for one minute (14 000_g) to isolate the desired products. Syringe tip filters (Millipore, 0.45 mm) were used to remove residual glass fibers from the resulting solutions. Typically, isolated yields were 30 ± 40% (dimers) and 20 ± 30% (trimers) based on the nanocrystal starting materials. [ Last edited by youcai147 on 2011-3-24 at 09:32 ] |
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