Extrachromosomal nucleic acids in bovine babesiaHotzelIsidroJohnstonRhona CarolTaqueJuliaFariasNara Amélia RosaGonzalésJoao CarlosOzakiLuiz Shozo Universidade Federal do Rio Grande do Sul, Faculdade de Veterinária Porto Alegre Brasil Universidade Federal do Rio Grande do Sul, Departamento de Bioquímica Porto Alegre Brasil Universidade Federal do Rio Grande do Sul, Centro de Biotecnologia Porto Alegre Brasil 001992873101102Two kinds of small extrachromosomal nucleic acid elements were found in the bovine babesias, Babesia bovis and B. bigemina. One element with an apparent size of 5.5 kilobase pairs (kbp) is a double stranded RNA related to virus like particles. Another molecule is a double stranded DNA with a molecular size of about 6.2 kbp. Southern blot comparison of restriction DNA fragments of the latter molecule, which is present in both B. bovis and B. bigemina is described.Babesia bovisBabesia bigeminamitochondrial DNADNA elementFull text available only in PDF format.Texto completo disponível apenas em PDF.