December 1963
Volume 2, Issue 6
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Articles  |   December 1963
Electron Microscopy Of Rhabdomyosarcoma Of The Orbit
Author Affiliations
  • ARNOLD J. KROLL
    Howe Laboratory of Ophthalmology, Harvard University Medical School, Massachusetts Eye and Ear Infirmary, 243 Charles St., Boston, Mass.
  • TOICHIRO KUWABARA
    Howe Laboratory of Ophthalmology, Harvard University Medical School, Massachusetts Eye and Ear Infirmary, 243 Charles St., Boston, Mass.
  • GEORGE M. HOWARD
    Howe Laboratory of Ophthalmology, Harvard University Medical School, Massachusetts Eye and Ear Infirmary, 243 Charles St., Boston, Mass.
Investigative Ophthalmology & Visual Science December 1963, Vol.2, 523-537. doi:https://doi.org/
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      ARNOLD J. KROLL, TOICHIRO KUWABARA, GEORGE M. HOWARD; Electron Microscopy Of Rhabdomyosarcoma Of The Orbit . Invest. Ophthalmol. Vis. Sci. 1963;2(6):523-537. doi: https://doi.org/.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Two rhabdomyosarcomas of the orbit, a differentiated type and an embryonal type, were studied with the electron microscope. The differentiated type contained cytoplasmic aggregates of actomyosin filaments intermingled with clusters of RNP particles. The close morphologic resemblance of cells in this tumor to normal embryonic muscle cells was noted.

The embryonal rhabdomyosarcoma contained cytoplasmic clusters of RNP particles, nonspecific fine filaments, and large vesicles. No typical actomyosin filaments were seen.

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