FIG. 1.

Amplified ospC genes of southern strains of B. burgdorferi sensu lato. The PCR products were electrophoresed on a 1% agarose gel, stained with ethidium bromide, and visualized with a UV light transilluminator. Molecular size standards (in base pairs) are shown to the left of the gel. The 19 southern strains and the reference strain AI-1, FD-1, MI-6, MI-8, MI-9, MOD-1, SCW-30h, SCGT-8a, SCGT-10, SI-10, BC-1, MOS-1b, MOD-5, MOK-3a, SI-1, SM-1, MI-2, MI-5, SCI-2, and B31 are shown in lanes 1 to 20, respectively.