Characterization of Artificial Pneumothorax-Unrelated Pyothorax-Associated Lymphoma

Figure 2

Immunohistochemical study of biopsy samples from patient 1 (a) and patient 2 (b). H&E: haematoxylin and eosin; PD-L1: programmed death-ligand 1; EBER: Epstein–Barr encoded RNA; and PAX5: paired box gene 5.