Fig. 4.

(A) Agarose gel (0.7%) electrophoresis of phage Abp53 DNA digested with different restriction endonucleases (shown above the lanes). Lane M contains a 1-kb DNA ladder (from Protech Biotechnology, Taiwan) as size markers. (B) PFGE of the Abp53 genomic DNA (ca. 30 ng). Electrophoresis was performed with a 1% agarose gel at 14°C and 200 V (with an initial time of 1 s and a final time of 40 s), running for 20 h. Lane M contains a lambda DNA ladder (New England BioLabs) as molecular size markers.