Amplified DNA polymorphisms of V. parahaemolyticus isolates with primer 284. Lane M, 100-bp ladder marker; each band represents a 100-bp increment, with 300 bp at the low end. Lanes: 1, isolate DOH702 (pattern C4); 2, DOH714 (0); 3, DOH718 (E1); 4, DOH719 (I1); 5, DOH720 (E1); 6, DOH730 (C5); 7, DOH733 (I2); 8, DOH738 (N); 9, DOH740 (C5); 10, DOH741 (E4); 11, DOH747 (F1); 12, DOH755 (E1).