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Uranium distribution inside the HK‐2 cells after exposure to 50 μM of uranyl nitrate for 2 hours. cryopreparation. SIMS ionic images (a) 40Ca+, (b) 23Na+, (c) 39K+, (d) 238U+, (e) superposition of 238U+(red)/23Na+(green), (f) 238U+ mass spectrum. Field 100 × 100 μm2 [Color figure can be viewed at http://wileyonlinelibrary.com]
