Adventitial Stromal Cells Define Group 2 Innate Lymphoid Cell Tissue Niches

Tissue-resident type 2 lymphocytes are involved in both physiologic and pathologic responses, yet their physical tissue niches are poorly described. Here, Dahlgren et al. identify a population of perivascular fibroblast-like stromal cells that express IL-33 and TSLP as local regulators of ILC2s and type 2 immunity.

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