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Southern blot of recombinant MDV. DNA from MDV-infected DEF was digested with TaqI, Southern blotted, and probed with the 132-bp repeats. Viral names that are followed by an A, B, or C represent separate independently generated recombinants. Positions of two, three, and nine copies of the 132-bp repeat are shown on the right. Numbers at left are molecular sizes in kilobases.
