Figure 4From: A novel in vitro bovine cartilage punch model for assessing the regeneration of focal cartilage defects with biocompatible bacterial nanocelluloseQuantitative analysis of proteoglycans and the aggrecan neoepitope CS846. (A) Proteoglycans were quantitatively assessed in fresh and cultured (+/-TGF-β1) cartilage, as well as in the culture supernatant by the measurement of GAG by the DMB assay; (B) quantitative analysis of the aggrecan neoepitope CS846 was performed by a specific ELISA assay. The values of the content in cartilage (blue bars) and the cumulative release of GAG/CS846 into the culture medium (red lines) are expressed as means ± SEM. BNC, bacterial nana-cellulose; DMB, dimethylene blue; GAG, glycosaminoglycan; SEM, standard error of the mean; TGF-β1, transforming growth factor-β1.Back to article page