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A and B, Expression of HLA-DR and CD86 (open histogram) in cultured HNECs from a healthy control subject (Fig E1, A) and a patient with AR (Fig E1, B; representative data from 9 different experiments, respectively). The isotype control is a filled histogram. C, HNECs stained for MHC class II (green). Scale bar = 50 μm. D, Expression of HLA-DR and CD86 on freshly isolated HNECs from healthy control subjects in nasal biopsy specimens (n = 4) and nasal brushings (n = 6).
