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Lung sections from COPD or IPF patients were reacted with antibodies against CD73 (A, green) or the A2BR (B, green) together with the M2 macrophage marker CD206 (red). In the merged images, yellow represents co-localization of CD73 or the A2BR and the M2 marker, blue is dapi stained nuclei. Sections are representative of 10–14 different patients from each group. Scale bars = 100 µm.
