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International Journal of Mycobacteriology. 2013; 2 (1): 44-50
in English | IMEMR | ID: emr-126195

ABSTRACT

Oral vaccination with BCG provides protective systemic immunity against pathogenic mycobacterial challenge. In this study, the anatomical distribution of Mycobacterium bovis BCG following oral vaccination was investigated. Replicating bacteria in the Peyer's patches and mesenteric lymph nodes were present as solitary rods or clusters of two to three bacteria, the majority of which were isolated ex vivo as extracellular forms. Only a minority were shown to be associated with typical antigen-presenting cells. Acid-fast staining of mast cell granules in lymphoid tissues revealed a potential pitfall for these analyses and may explain previous reports of acid-fast 'coccoid' forms of mycobacteria in tissues


Subject(s)
Animals, Laboratory , Tuberculosis/prevention & control , Mice, Inbred BALB C , Mycobacterium bovis , Immunity, Cellular , Lymphoid Tissue , Tuberculosis Vaccines
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