Representative gel image of AFLP analysis of V. cholerae from clinical and environmental sources with the HindIII-TaqI combination. Lanes: 1 and 2, environmental non-O1 (ir11 and ir2); 3 to 5 and 7 and 8, clinical O1 and O139 strains (from left to right, m45, m44, m42, m30, and m27); 6 and 9 to 15, environmental non-O1 strains (from left to right, ir34, rc68, rc67, rc65, rc64, rc61, rc60, and rc59).