Genomic profiles of DNA from 20422-1, 805405-1, and P100 following digestion with SacI. Lanes M1 and M2, size markers exACTGene (Fisher Scientific, Fairlawn, NJ) and DNA molecular-weight marker II (Roche, Indianapolis, IN), respectively; lanes 1 to 3, SacI-digested DNA from 20422-1, 805405-1, and P100, respectively.