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19441 - Bacteria which are able to take up DNA in this...

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1944, Avery, MacLeod, and McCarty -purified the "transforming principle" from extracts of S---it was DNA also no effect with proteases or RNases, but did loose transformation activity when treated with DNases (proteases degrade protein, DNases degrade DNA) Bacterial Transformation - Fragments of DNA penetrate the cell wall of the bacteria
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Unformatted text preview: Bacteria which are able to take up DNA in this manner are termed competent Bacterial cells can be treated with calcium chloride to make them more competent for recombinant DNA expermentation....
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