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In molecular cloning, a vector is a DNA molecule used as a vehicle to artificially carry foreign genetic material into another cell, where it can be replicated and/or expressed (e.g.- plasmid, cosmid, Lambda phages).A vector containing foreign DNA is termed recombinant coverstory.info four major types of vectors are plasmids, viral vectors, cosmids, and artificial chromosomes.

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Section DNA Cloning with Plasmid Vectors. The ability to select transformed cells is critical to DNA cloning by plasmid vector technology because the transformation of E. coli with isolated plasmid DNA is inefficient. Normal E. coli cells cannot take up plasmid DNA from the medium. Exposure of cells to high concentrations of certain Cited by: 4.

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