FIG. 2.

Photograph of the ethidium bromide-stained, UV-transilluminated, HaeIII-digested PCR products after electrophoresis within a 3% agarose gel. The DNA from the PCR had been first purified by the Wizard PCR Preps purification system prior to overnight digestion with the 10 U of restriction endonuclease HaeIII. Molecular size markers are in lane M, and their corresponding sizes (in base pairs) are given on the left of the figure. Lane assignments are the same as those for Fig. 1.