Send to

Choose Destination
See comment in PubMed Commons below
Vet Rec. 1992 Jul 18;131(3):45-7.

Isolation of Mycobacterium bovis from the respiratory tracts of skin test-negative cattle.

Author information

Veterinary Research Laboratories, Stormont, Belfast.


Mycobacterium bovis was isolated from the respiratory tracts of three cattle which registered negative to tuberculin testing; no tuberculous lesions were found and the culture of lymph nodes and other tissues proved negative. One animal was from a group of five calves which had been inoculated intranasally with M bovis, and the organism was recovered once only from nasal mucus sampled 100 days after inoculation. The second animal had had contact with experimentally infected cattle which were excreting M bovis and the third was from a commercial farm. The results of ELISAS for antimycobacterial antibodies and interferon-gamma, and of lymphocyte transformation assays are presented. The animals' immune responses provided evidence that each of them had been challenged.

[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Loading ...
    Support Center