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The extracellular and intracellular GSH content was significantly reduced by CyBr‐SS‐L, CyI‐SS‐L, and CyH‐SS‐L PSs. A) UV absorption spectra of PSs before and after GSH treatment in DMSO solution. B) The content of intracellular GSH in KB‐3‐1, KB‐C2, MCF7, and MCF7/taxol cells treated with CyI‐SS‐L. C) UV–vis absorption and fluorescence spectra of CyH‐SS‐L, CyBr‐SS‐L, or CyI‐SS‐L in MeOH, DCM, DMSO, EtOH, EA, and DMF solvent (***p < 0.001).
