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The cellular uptake of BHX in K562 cells was based upon its fluorescent property. A, Chemical structure of BHX. B, Ultraviolet‐visible spectroscopy of BHX. C, Fluorescence emission spectra of BHX with excitation wavelength at 350 nm. D, Cells were treated with 20 μmol/L of BHX for different time points. Values expressed were mean ± SD of experiments performed in triplicate
