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. 2022 Apr 22;66(2):3393. doi: 10.4081/ejh.2022.3393

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Figure 1. — Representative histopathological findings for undifferentiated pleomorphic sarcoma (UPS) (a), myxofibrosarcoma (MYF) (b), and malignant peripheral sheath tumor (MPNST) (c). Hematoxylin and eosin (HE) staining (a-c). PD-1-positive histological findings in UPS (d) and MFS (e), and negative findings in MPNST (f ). PD-L1-positive histological findings in UPS (g), MFS (h), and MPNST (i). NY-ESO- 1-positive histological findings in UPS (j), MFS (k), and MPNST (l). MAGE-A4-positive histological findings in UPS (m), MFS (n), and MPNST (o). The lower right inset images are the negative control for each immunostaining image (d-o). Scale bars: 100 μm.