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(A–E) Photomicrographs show features of mouse PNSTs, including cells positive for S100 (A), Meis1(B), and neurofilament (C). H&E staining reveals tumor integrated nerve bundles (large arrow, C), Hemorrhage (small arrow heads, D), and tumor areas with fascicular patterns of spindle cells (inset in E) are shown. Scale bars: A = 100 μm applies to A-B; C = 500 μm applies to C–E.
