Figure 2

(a) Hydrodynamic diameters and (b) surface charges (zeta-potential) of nano-carrier (NC) and heparin nanosponge (Hep-NS) at 5 °C, 25 °C, and 37 °C. Hep(X)-NS denotes the amount of heparin (X wt%) in relation to the nanosponge. (c) TEM images of (A) NC, (B) Hep(3)-NS, (C) Hep(6)-NS, (D) Hep(15)-NS, and (E) Hep(24)-NS. Scale bar: 200 nm.