Lung tissue histology of OPN-related TRALI responses. (A-F) Histology performed on lung tissue from the indicated mouse groups. (i-ii) H&E-stained lung tissue images taken at original magnification (i) ×20 and (ii) ×40. Representative images of each indicated group are shown. Scale bars, (i) 100 µm and (ii) 50 µm. ab, antibody.