Polymeric IgR knockout mice are more susceptible to mycobacterial infections in the respiratory tract than wild-type mice.

Abstract excerpt

It is generally accepted that cellular, and not humoral immunity, plays the crucial role in defense against intracellular bacteria. However, accumulating data indicate the importance of humoral immunity for the defense against a number of intracellular bacteria, including mycobacteria. We have investigated the role of secretory IgA, the main isotype found in mucosal tissues, in protection against mycobacterial...

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