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5-Fluorouracil-loaded NPs. a High-resolution transmission electron micrograph of PBCA (a) and PCL (b) NPs. Bar lengths, 100 nm. b Release of entrapped 5-FU from PBCA NPs (open squares) and PCL NPs (filled squares) as a function of the incubation time in PBS (pH 7.4 ± 0.1) at 37.0 ± 0.5°C. Data represents the mean value ± SD of quadruplicate experiences
