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DexPHS nanoparticle size changes according to changes of pH in deionized water (A) and RPMI 1640 medium (10% fetal bovine serum) (B). For particle size measurement in serum-containing medium, a nanoparticle solution in water was diluted with RPMI medium (10% fetal bovine serum) at various pHs.
Abbreviations: DexPHS, dextran-b-poly(L-histidine); RPMI, Roswell Park Memorial Institute.
