Fig. 3.

To obtain pure nanogels, the lipid bilayer on lipogels was removed with the surfactant Triton X-100. The suspension was then passed through a PD-10 size-exclusion column to separate micelles (ca. 10 nm, not shown here) from resulting nanogels. As shown, nanogels average ca. 320 nm compared to lipogels (ca. 120 nm) at pH 7.4.