SUMMARY: Acid phosphatase, esterases, and glutamate, lactate and malate dehydrogenases of 34 strains of and 22 strains of were analysed by horizontal polyacrylamide agarose gel electrophoresis and by isoelectrofocusing in thin-layer polyacryl-amide gel. The two species could be separated on the basis of distinct electrophoretic patterns of all enzymes analysed. Glutamate dehydrogenase and acid phosphatase were detected exclusively in , whereas esterase bands were more intensively stained in For each species, two zymotypes could be distinguished, on the basis of electrophoretic mobilities of malate dehydrogenase and banding patterns of esterase for , and by both isoelectric point and electrophoretic mobilities of an esterase and of lactate and malate dehydrogenases for The high degree of enzyme polymorphism within the two species permitted precise identification of strains. The variations in electrophoretic patterns might therefore provide useful epidemiological markers.


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