CATEGORIZATION OF CLINICAL ISOLATES OF HELICOBACTER-PYLORI ON THE BASIS OF RESTRICTION DIGEST ANALYSES OF POLYMERASE CHAIN REACTION-AMPLIFIED UREC GENES

Restriction endonuclease analyses of a 1.1-kb polymerase chain reaction-amplified portion of the ureC gene from Helicobacter pylori were used to group or to differentiate 21 clinical isolates. Isolates were placed into 4 groups after HindIII digestion alone, and placement was expanded into 15 groups after isolates were digested with AluI and PvuI.