PmeI pulsed-field gel electrophoresis patterns for Francisella tularensis type A and type B. Lanes 1 and 8, Salmonella enterica serotype Braenderup standard; lane 2, Virginia 1997 type B; lane 3, Indiana 1999 type B; lane 4, New York 2004 type A-east; lane 5, Oklahoma 2001 type A-east; lane 6, Oregon 2004 type A-west; lane 7, California 2002 type A-west.