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Updated: Aug 11, 2026

Identification of Mycobacterium Species by DNA Microarray Chip Method
Published on: June 24, 2025
Genomic comparison of Mycobacterium avium subsp. paratuberculosis sheep and cattle strains by microarray
Ian B Marsh1, John P Bannantine, Michael L Paustian
1Faculty of Veterinary Science, University of Sydney, Camden, NSW, Australia. ian.marsh@agric.nsw.gov.au
Abstract:
Microarray-based comparisons of three Mycobacterium avium subsp. paratuberculosis isolates, including one sheep strain and two cattle strains, identified three large genomic deletions in the sheep strain, totaling 29,208 bp and involving 24 open reading frames. These deletions may help explain some of the differences in pathogenicity and host specificity observed between the cattle and sheep strains of Mycobacterium avium subsp. paratuberculosis.
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