A radioisotope that is a powerful isotope used in selenium biochemistry. It emits γ rays with 0.265 eV (59%) and 0.280 eV (25%), and decays with a half-life time of 120.4 days. [ https://www.sciencedirect.com/science/article/abs/pii/S0076687902470292 ]
This is just here as a test because I lose it
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definition
A radioisotope that is a powerful isotope used in selenium biochemistry. It emits γ rays with 0.265 eV (59%) and 0.280 eV (25%), and decays with a half-life time of 120.4 days.