1. $\mathit{EE}\phantom{\rule{0.5em}{0ex}}\left(%w}{w}\right)=\frac{\mathrm{Weight}\phantom{\rule{0.5em}{0ex}}\mathrm{of}\phantom{\rule{0.5em}{0ex}}\mathrm{the}\phantom{\rule{0.5em}{0ex}}\mathrm{drug}\phantom{\rule{0.5em}{0ex}}\mathrm{in}\phantom{\rule{0.5em}{0ex}}\mathrm{nanoparticle}}{\mathrm{Weight}\phantom{\rule{0.5em}{0ex}}\mathrm{of}\phantom{\rule{0.5em}{0ex}}\mathrm{the}\phantom{\rule{0.5em}{0ex}}\mathrm{polymer}\phantom{\rule{0.5em}{0ex}}\mathrm{and}\phantom{\rule{0.5em}{0ex}}\mathrm{drug}\phantom{\rule{0.5em}{0ex}}\mathrm{added}}×100.$
2. $\mathit{DL}\phantom{\rule{0.5em}{0ex}}\left(%w}{w}\right)=\frac{\mathrm{Weight}\phantom{\rule{0.5em}{0ex}}\mathrm{of}\phantom{\rule{0.5em}{0ex}}\mathrm{the}\phantom{\rule{0.5em}{0ex}}\mathrm{drug}\phantom{\rule{0.5em}{0ex}}\mathrm{in}\phantom{\rule{0.5em}{0ex}}\mathrm{nanoparticle}}{\mathrm{Weight}\phantom{\rule{0.5em}{0ex}}\mathrm{of}\phantom{\rule{0.5em}{0ex}}\mathrm{the}\phantom{\rule{0.5em}{0ex}}\mathrm{polymer}\phantom{\rule{0.5em}{0ex}}\mathrm{and}\phantom{\rule{0.5em}{0ex}}\mathrm{drug}\phantom{\rule{0.5em}{0ex}}\mathrm{added}}×100.$ 