Effects of gamma-rays on the taste buds of embryos and adults of the fish Oryzias latipes.

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  • GHONEUM M. M. H.
    Zoological Institute, Faculty of Science, University of Tokyo Zoology Department, Faculty of Science, Mansoura University
  • IJIRI K.
    Zoological Institute, Faculty of Science, University of Tokyo
  • HAMED M. S.
    Anatomy Department, Faculty of Medicine, Mansoura University
  • GABR O. M.
    Anatomy Department, Faculty of Medicine, Mansoura University
  • EGAMI N.
    Zoological Institute, Faculty of Science, University of Tokyo

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The present study was performed in order to evaluate the state of activity of the taste bud cells of the fish Oryzias latipes. Two types of taste bud cells, namely pale cells and dark cells were distinguished and scored separately. From the irradiation experiment on adult fish, it was found that pale cells were more radiosensitive than are dark cells. At 10 days after irradiation with 1000 R, repopulation of the pale cells was observed and their number returned almost to the control value. In the experiments using various stages of embryos, the formation of the taste bud cells was highly radiosensitive at their early embryonic stages.

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