Fig. 4

Ro52 present in peripheral lung tissue from healthy organ donors IHC from healthy peripheral lung tissue in donor 1 (A-D) and donor 2 (E–H) showing cellular localization of Ro52 (brown) in peripheral lung tissue (A, E) with distinct expression on alveolar macrophages (CD206; red; B, F). Co-staining with anti-CD206 and anti-Ro52 showed co-localization in alveolar M2 macrophages (C, D, G, H). Scale bar = 20 µm (A-C, E–G), 10 µm (D, H). Representative images from two healthy donors