Figure 6
From: Anabolic and catabolic responses of human articular chondrocytes to varying oxygen percentages
SEM images and structural analysis of extracellular collagen-fibrils from engineered, healthy and osteoarthritic cartilage samples. Representative scanning electron microscopy (SEM) images of (A) tissues generated by culturing human articular chondrocytes in pellets for four weeks (two weeks of Phase I and two weeks of Phase II) or (B) native human tissue biopsies from healthy or osteoarthritic (OA) cartilage. (C) Persistence length and (D) bending ratio assessment of the extracellular fibril network of engineered and native tissues. * = significant different from 19% O2; ° = significant different from OA tissues.