extracts from y. pestis and y. enterocolitica strains with and without the virulence plasmids pyv019 and pyv8081 , respectively , were resolved by denaturing electrophoresis , and the major antigens were visualized with sera from convalescing plague patients , individuals immunized with plague vaccine , and mice and rabbits immunized with avirulent live yersiniae .
C0032064
plague
C0032066
plague vaccine