Figure 4.
(A) UV—visible spectra of gemcitabine and PG4.5-DETA-biotin/GEM nanoparticles. (B) In vitro release of gemcitabine from PG4.5-DETA-biotin/GEM nanoparticles at pH 7.4, 6.5, and 5. Results are mean ± SD of triplicate measurements (n = 3).
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