Fig. 1From: PD-1 axis expression in musculoskeletal tumors and antitumor effect of nivolumab in osteosarcoma model of humanized mouseIHC staining for PD-L1, PD-L2, and PD-1 expression in the TMA samples. PD-L1, PD-L2, and PD-1 exhibited a membranous expression accompanied by cytoplasmic expression. Representative images for every histological type are shown (The background image was magnified at × 50, while the insert image was magnified at × 400 in GCT. The other histological types were magnified at × 400)Back to article page