RAPD profiles of selected acetic acid bacterial strains from rice vinegar. Lane 1, lambda HindIII-EcoRI fragments used as DNA size markers; lanes 2 to 11, strains TN-6, TN-9, TN-12, TN-70, TN-71, TN-21, TN-23, TN-27, TN-1, and TN-2, respectively; lane 12, PCR markers (Novagen).