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北京柏瑞图科技有限公司
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24 rxns (DUOs)
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文献和实验Belcher/Knight: Electrocompetent Cells
Electrocompetent Cells From Danijela Dukovski at Harvard Medical School. This protocol works well. --Julie Norville Materials DI water 10% Glycerol Special Equipment Centrifuge Ice water bath Liquid
Transformation of Electrocompetent E. coli with Blue/White selection
to determine the efficiency of competent cells: Efficiency (Transformants/µg) = colonies/plate x (Bacterial dilution factor) x 20,000 Highly competent cells should have ~50 colonies on the plate with a 1/10 dilution of the control DNA
Cell cycle analysis of Escherichia coli cells
forks → 8-origin peak in run-out histogram = 77% of the cells 6 and 4 forks → 4-origin peak in run-out histogram = 23% of the cells The fraction of cells containing 6 forks: F = 2 - 2((τ-at )/τ) = 2 � 2((27-2)/27) = 0.10 The fraction of cells
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