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Updated: Jul 27, 2026

Transgenic Rodent Assay for Quantifying Male Germ Cell Mutant Frequency
14:45

Transgenic Rodent Assay for Quantifying Male Germ Cell Mutant Frequency

Published on: August 6, 2014

男性マウスにおけるプルトニウム239のサイトジェニック効果

C V Beechey, D Green, E R Humphreys

    Nature
    |August 14, 1975
    PubMed
    まとめ

    No abstract available in PubMed .

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    Nuclear Transmutation03:20

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    Nuclear transmutation is the conversion of one nuclide into another. It can occur by the radioactive decay of a nucleus, or the reaction of a nucleus with another particle. The first manmade nucleus was produced in Ernest Rutherford’s laboratory in 1919 by a transmutation reaction, the bombardment of one type of nuclei with other nuclei or with neutrons. Rutherford bombarded nitrogen-14 atoms with high-speed α particles from a natural radioactive isotope of radium and observed protons being...
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    Many organic, inorganic, and biological molecules contain spin-half nuclei such as nitrogen-15, fluorine-19, and phosphorus-31. As a result, NMR studies of these nuclei have found extensive applications in chemical and biological research.
    While fluorine-19 and phosphorous-31 have high natural abundances (100%) and positive gyromagnetic ratios, nitrogen-15 has a low natural abundance and a negative gyromagnetic ratio. However, nitrogen-15 is still preferred over nitrogen-14 (which has a high...