Volume 36, Issue 1
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



Although is biologically and morphologically distinct from , these two hemoflagellates are epidemiologically linked. We report the results of enzyme electrophoretic studies of stocks isolated from sylvatic and domiciliary , and infected humans inhabiting foci in which was sympatrically transmitted. stocks displayed electrophoretically detectable polymorphism for only a single enzyme, isocitrate dehydrogenase (ICD), in contrast with the marked phenotypic heterogeneity previously reported among the stocks. The relatively restricted diversity manifested by stocks from different geographic sites and ecologic habitats may reflect the existence of distinctive biologic or genetic constraints influencing and transmission.


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