AbstractLosses of photoreceptor cells (rods) from the retinas of New Zealand white (NZW) rabbits were detectable within 2 years after localized acute irradiation of optic and proximal tissues with ≥ 7 Gy of 530 MeV u−140Ar ions or ≥ 2 Gy of 465 MeV u−156Fe ions in the Bragg plateau region of energy deposition. Those limits were determined only from an analysis of variance of dose groups because the shapes of the dose response curves at early post-irradiation times are not known, a concern being addressed by experiments in progress. Losses of photoreceptor cells for the period 0.5–2.5 years post-irradiation, determined by provisional linear regression analysis, were ∼1.7% Gy−1 and 2.5% Gy−1 for 40Ar and 56Fe ions, respectively.


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    Title :

    Effects of 40Ar and 56Fe ions on retinal photoreceptor cells of the rabbit: Implications for manned missions to Mars


    Contributors:
    Williams, G.R. (author) / Lett, J.T. (author)

    Published in:

    Advances in Space Research ; 14 , 10 ; 217-220


    Publication date :

    1994-01-01


    Size :

    4 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English