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RT. Do not freeze.
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5g///10g///50g
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文献和实验gradients have been most frequently used, but we prefer 15�40% glycerol gradients in 0.2 M ammonium bicarbonate, because this is the buffer used for rotary shadowing EM (Section 6 ). The protein of interest is sedimented in one bucket of the swinging
dishes (e.g., Corning® CellSTACK®). 6. CO 2 incubator and biosafety cabinet. 7. Filter bottle, 0.5–1 L, 0.2-μm pore size (Corning or equivalent). 2.2. Preparation of Wnt3A CM for Fractionation 1. 20% (v/v) Triton X-100. 2. 1 M Tris-HCl, pH
by placing the gel slice within a microfuge tube containing a membrane with a small pore size, such as a Costar Spin-X microfuge tube fitted with a 0.22 μm filter [12]. Alternatively, gel slices composed of low melting point (LMP) agarose can be placed
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