Figure 3. Sample images of activated HUVEC monolayers exposed to PLGA in different flow mediums.

Phase image of 1.4 µm sLe^a-coated PLGA spheres bound to IL1-β-activated HUVEC monolayer after 5 min of flow of particles in (A) RBC-in-Buffer, (B) whole blood, and (C) plasma at 200 s⁻¹. Image taken at 20× magnification. sLe^a density  = 1500+/−100 sites/µm² (SEM). Particle concentration  = 5e5 particles/mL. Scale bar  = 20 µm