Fig. 3From: Dipeptidyl peptidase-4 is highly expressed in bronchial epithelial cells of untreated asthma and it increases cell proliferation along with fibronectin production in airway constitutive cells DPP4 mRNA and protein induced by IL-13 in ALI-cultured BECs. a In primary cultured BECs derived from both snBA and stBA samples, DPP4 mRNA expression was enhanced by IL-13 (10 ng/ml) stimulation. * P < .001, compared with medium alone. b The production of DPP4 protein was similarly enhanced by IL-13 (10 ng/ml) stimulation, in cells from both snBA and stBA samples. ** P < .01, compared with medium aloneBack to article page