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Elution of enalaprilat from CaP particles (grey hatched); (a) hybrid (blue) and chitosan (green) particles formed with 5 kDa chitosan; and (b) chitosan (grey) and hybrid (red) particles formed with 72 kDa glycol chitosan 0.15 M NaCl, pH 7.5. The results presented are the average of three analyses ± standard deviation.
