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(A) Micrographs of histological sections of the asthmatic human airway showing the loss of epithelial integrity and wall thickening by H and E staining. Magnification 400X. (B) TSLP, p16, p21, Ki67, α-SMA and collagen I expression. Arrows indicate areas of positive expression. Magnification, 400×. (C) Bimodal H score distribution of TSLP, p16, p21, Ki67, α-SMA and collagen I immunoperoxidase reactions.
