MakingMetaphaseSpread
Materials:Colcemid (GIBCO: cat #: 15210-040)Hypotonic solution (pre-warmed 37C): 1:1 0.4% KCl + 0.4% Sodium citrateFixative: 3:1 MeOH + Acetic acid (e.g., 15 mL MeOH + 5 mL Acetic acid)Pasteur transpipetProcedure:Grow and harvest cells:Grow cells to 85% confluenceAdd colcemid to cell culture at 10 µl/mLIncubate for 2 hours (depends on cell cycle: longer cycl......阅读全文
Making-Metaphase-Spread
Materials:Colcemid (GIBCO: cat #: 15210-040)Hypotonic solution (pre-warmed 37C): 1:1 0.4% KCl + 0.4% Sodium citrateFixative: 3:1 MeOH + Acet
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12. Hold the salivary glands at the common duct with tweezers.Transfer the glands to a drop of fixing solution on a siliconizedcoverslip. 13.
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7. PCR产物与TA载体连接 pGEM-T vector is T-tailed at the insert site. To improve the ligation efficiency, it is recommended PCR product be A-tailed. +A s