1、实验 1 质粒 DNA 提取及鉴定1. 含质粒 DNA 细菌于 LB 培养基中培养过夜,将菌液分装至EP 管中(1ml/ 支) ,离心去上清。2. 沉淀重悬浮 100ul 溶液(50 mmol/L 葡萄糖、10mmol/L EDTA、25mmol Tris-HCl pH8.0)中, 震荡混匀。3. 加入 200ul 新鲜配制的溶液 (1mol/L NaOH 200ul、 10% SDS 100ul、H 2O 700ul) ,颠倒混匀 10 次。4. 加入 150ul 溶液 (29.4g KAc、11.5ml 冰醋酸、加水至100ml)颠倒混匀,冰浴 5min,12000rpm 离心 10min
2、。5. 上清移至另一干净 EP 管中,加入等体积饱和酚(约 450ul)充分颠倒混匀,12000rpm 离心 10min。6. 上清移至另一干净 EP 管中,加入等体积酚/氯仿,颠倒混匀,12000rpm 离心 10min。7. 上清移至另一干净 EP 管中,加入 2 倍体积冷无水乙醇混匀,静置 5min,12000rpm 离心 10min.8. 弃上清,用 0.5ml 70% 乙醇洗涤 DNA,弃上清,倒置干燥。9. 加入 10ul TE,于 1%琼脂糖凝胶电泳观察鉴定。Semiconductor Quantum Dots and Quantum Dot Arrays and Applica
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