Fig. 1.
Schematic of specimen preparation and testing protocols. (a) Schematic of specimen preparation. (b) Time-series of FRAP measurements including prebleaching, bleaching, and 106 s postbleaching events. Scale bars represent a length of 50 μm. Note: CEP represents cartilage endplate. Radial (r) and axial (z) directions are parallel and perpendicular to vertebral body, respectively.