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Restriction analysis of phage genomic DNA. (A) Uncleaved phage DNA. Lane M: Midrange PFG marker; (B) Restriction enzyme-digested fragments of the phage phiPA1-3. Lane M1: 1 Kb DNA ladder; M2: λ/HindIII marker; uncut: uncleaved phiPA1-3 DNA; the lanes labeled EcoRI, HindIII, and BamHI represent restriction fragments that have been cleaved by the respective enzymes.
