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(A) EcoRI restriction digests of phages ΦCP6-1 to ΦCP6-6 (lanes 1 to 6, respectively) electrophoresed on a 0.7% agarose gel. (B) Southern blot of the same gel probed with DIG-labelled ΦCP6-3 DNA after 30 min of exposure to photographic film. (C) Southern blot shown in panel B after 24 h of exposure. Lanes λ contained a HindIII-cut lambda ladder.
