Author: ["Juan E Moyron-Quiroz","Javier Rangel-Moreno","Kim Kusser","Louise Hartson","Frank Sprague","Stephen Goodrich","David L Woodland","Frances E Lund","Troy D Randall"]
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Abstract
Bronchus-associated lymphoid tissue (BALT) is occasionally found in the lungs of mice and humans; however, its role in respiratory immunity is unknown. Here we show that mice lacking spleen, lymph nodes and Peyer's patches generate unexpectedly robust primary B- and T-cell responses to influenza, which seem to be initiated at sites of induced BALT (iBALT). Areas of iBALT have distinct B-cell follicles and T-cell areas, and support T and B-cell proliferation. The homeostatic chemokines CXCL13 and CCL21 are expressed independently of TNFα and lymphotoxin at sites of iBALT formation. In addition, mice with iBALT, but lacking peripheral lymphoid organs, clear influenza infection and survive higher doses of virus than do normal mice, indicating that immune responses generated in iBALT are not only protective, but potentially less pathologic, than systemic immune responses. Thus, iBALT functions as an inducible secondary lymphoid tissue for respiratory immune responses.Cite this article
Moyron-Quiroz, J., Rangel-Moreno, J., Kusser, K. et al. Role of inducible bronchus associated lymphoid tissue (iBALT) in respiratory immunity. Nat Med 10, 927–934 (2004). https://doi.org/10.1038/nm1091 