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    Dose fractionation and hepatocyte clonogens: alpha/beta congruent to 1-2 Gy, and beta decreases with increasing delay before assay.

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    Authors
    Fisher, David R
    Hendry, Jolyon H
    Affiliation
    Radiobiology Department, Paterson Institute for Cancer Research, Christie Hospital and Holt Radium Institute, Manchester, United Kingdom.
    Issue Date
    1988-01
    
    Metadata
    Show full item record
    Abstract
    The sensitivity to X-ray dose fractionation was assessed for hepatocytes forming colonies in fat pads in mice. When the cells were assayed 1 day after the last irradiation the alpha/beta ratio was 1.0-1.6 depending on the method of analysis. The alpha/beta ratio describing the shape of the single-dose survival curve was much higher, and it did not predict the response to fractionation. When the assay was delayed for 10 months after the fractionated irradiation, the alpha/beta ratio was 1.9-2.1, and the beta component showed the greatest change with time. It is concluded that hepatocytes respond to dose fractionation in a manner expected of a late-responding tissue, even when the cells are assayed as early as 1 day after the last dose.
    Citation
    Dose fractionation and hepatocyte clonogens: alpha/beta congruent to 1-2 Gy, and beta decreases with increasing delay before assay. 1988, 113 (1):51-7 Radiat. Res.
    Journal
    Radiation Research
    URI
    http://hdl.handle.net/10541/114382
    PubMed ID
    3340725
    Type
    Article
    Language
    en
    ISSN
    0033-7587
    Collections
    All Paterson Institute for Cancer Research

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