Fig. 3.

VMV of the EGL in an excised porcine femoral artery. (A) A 4.7 µm vaterite microsphere rotating at 6.0 Hz in EGL preserving media near the endothelium of an excised vessel slice. The gap thickness is measured as shown. Scale bar is 10 µm. (B) Apparent viscosity, ${\eta }_i$ measured in an excised vessel slice cultured in EGL preserving media (C) Apparent viscosity, ${\eta }_i$ measured in an excised vessel slice cultured in EGL collapsing media. (D) Representative data for vessel experiments in EGL preserving and collapsing media, as well as the solid glass boundary experiment in water highlight role of the EGL in modulating local apparent viscosity.