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- W1560291889 abstract "The effects of standard fixatives (10% neutral buffered formalin, ethanol and mercury based) on the detection of Mycobacterium leprae DNA by the polymerase chain reaction (PCR) were studied. Mercury-based fixatives (Zenker's and Carnoy-Lebrun's fluids) strongly inhibited PCR amplification of M. leprae DNA. Ten percent neutral buffered formalin was inhibitory, but significant inhibition was observed only when fixation times exceeded 24 h. Ethanol-based fixatives provided the best medium for holding specimens for subsequent PCR with both free bacilli and skin biopsy specimens containing M. leprae. The M. leprae-specific, 360-bp region of the 18-kDa protein gene could be amplified from paraffin-embedded sections of formalin-fixed skin biopsy specimens from patients with either multibacillary or paucibacillary infections when proper fixation conditions were used. Results of the study demonstrate that tissues properly fixed with two standard fixatives (10% neutral buffered formalin and 50 or 70% ethanol) can be analyzed by PCR for the presence of M. leprae with no loss in specificity and only minimal diminution in sensitivity compared with the specificities and sensitivities obtained by use of freshly prepared, unfixed specimens." @default.
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- W1560291889 date "1992-12-01" @default.
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- W1560291889 title "Effects of fixation on polymerase chain reaction detection of Mycobacterium leprae" @default.
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- W1560291889 doi "https://doi.org/10.1128/jcm.30.12.3095-3098.1992" @default.
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