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IL-5, CCL2, and CXCL8 in sinus mucous are higher in patients with AERD relative to aspirin-tolerant patients with CRS These mediators are pleiotropic, leading to widescale inflammatory processes contributing to AERD AERD is not only a T2 disease but heterogeneous: this may explain the refractory nature of AERD.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11660759PMC
http://dx.doi.org/10.1002/alr.23216DOI Listing

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