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Type II restriction of phage T4 DNA. Phage T4 DNA was digested by 10 REases and analyzed by agarose gel electrophoresis (A). The predicted digestion patterns in the absence of modifications by NEBcutter are shown in (B). The recognition sequence and results are shown in (C). The question marks in “P?” indicate possible partial digestions (the presence of a few large DNA bands not seen in NEBcutter patterns).
