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Figure 2(a): Low magnification reveals nests of primitive neuro-ectodermal tumor cells (H and E, original magnification ×200). (b) Tumor cells showing extensive skeletal muscle differentiation evident as eosinophilic strap cells (H and E, original magnification ×200). (c) The primitive neuro - ectodermal component shows immunoreactivity for synaptophysin (indirect peroxidase, original magnification ×400). (d) The skeletal muscle differentiation is highlighted by immunoreactivity to desmin (indirect peroxidase, original magnification ×200)

Figure 2(a): Low magnification reveals nests of primitive neuro-ectodermal tumor cells (H and E, original magnification ×200). (b) Tumor cells showing extensive skeletal muscle differentiation evident as eosinophilic strap cells (H and E, original magnification ×200). (c) The primitive neuro - ectodermal component shows immunoreactivity for synaptophysin (indirect peroxidase, original magnification ×400). (d) The skeletal muscle differentiation is highlighted by immunoreactivity to desmin (indirect peroxidase, original magnification ×200)