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Detection and identification of Mycobacterium tuberculosis, M. bovis/BCG, and M. avium by two-step polymerase chain
C Bollet1, X De Lamballerie, C Zandotti
1Laboratoire de Microbiologie et d'Hygiène Hospitalière, Hôpital Salvator, Marseille, France.
Microbiologica
|October 1, 1992
Abstract:
We propose a rapid two-step PCR to amplify a 767-bp sequence present in the gene coding for the 65-kD antigen of mycobacteria. The high G+C content (80%) permitted annealing to occur at 70 degrees C, enhancing the specificity. The amplified fragment contains a restriction site for differentiation between M. tuberculosis, M. bovis/BCG, and M. avium. Complete diagnosis can be achieved in less than four hours without labelled probe or nucleic acid transfer.