Embryonal Rhabdomyosarcoma

Electron micrograph of embryonal rhabdomyosarcoma. The cytoplasm of tumor cells contains abortive cross striations, too small and haphazardly oriented to be visible with the light microscope. Inset shows a Z band and clearly visible double set of filaments. (×45,000; courtesy of Dr B. Lane, New York)

Electron micrograph of embryonal rhabdomyosarcoma. The cytoplasm of tumor cells contains abortive cross striations, too small and haphazardly oriented to be visible with the light microscope. Inset shows a Z band and clearly visible double set of filaments. (×45,000; courtesy of Dr B. Lane, New York)

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