Volume 47, Issue 2
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



Seventeen Mexican stocks and five South American reference strains were analyzed by III restriction fragment length polymorphisms associated with ribosomal RNA gene spacers and by I digestion patterns of total DNA. Our findings demonstrate the occurrence of genetic heterogeneity within these stocks. Hierarchic and non-hierarchic clustering of these molecular characters allowed the formation of groups that correlate with the geographic origin of the stocks. The I digestion pattern permitted the identification of DNA fragments from the kinetoplast maxicircles, and therefore represents a simple and convenient method for conducting epidemiologic surveys in laboratories in developing countries.


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