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Hemolysis of red blood cells by (A) PCPP-PEO complexes as a function of pH at 0.01 (1), 0.02 (2), 0.03 (3) and 0 (4) mg/mL PEO (0.0025% PCPP, PBS); (B) PEO concentration (0.0025% PCPP, PBS, pH 6.5, molecular weight of PEO − 100,000 g/mol) and (C) hydrodynamic diameter of complexes as a function of pH at 0.01 (1), 0.02 (2) and 0.03 mg/mL PEO (3). (D) Schematic presentation of PCPP-PEO complex interaction with cellular membrane.
