Fig. 1

Thymic stromal lymphopoietin (TSLP) and interleukin-33 (IL-33) protein concentrations in bronchoalveolar lavage (BAL) fluid. a TSLP protein was detected in 23 of 40 normal controls (NCs), 100 of 100 patients with idiopathic pulmonary fibrosis (IPF), 18 of 22 patients with non-specific interstitial pneumonia (NSIP), 18 of 20 patients with hypersensitivity pneumonitis (HP), and 18 of 19 patients with sarcoidosis. The open and closed circles indicate detectable TSLP protein levels and those below the lower limit of detection (>3.46 pg/mL), respectively. b IL-33 protein was detected in 36 of 40 NCs, 96 of 100 patients with IPF, 20 of 22 patients with NSIP, 14 of 20 patients with HP, and 15 of 19 patients with sarcoidosis. The open and closed circles indicate detectable IL-33 protein levels and those below the lower limit of detection (>0.519 pg/mL), respectively. The data are presented as median values with the 25^th and 75^th percentiles