Figure 1From: Evaluation of chitosan-GP hydrogel biocompatibility in osteochondral defects: an experimental approachOptical microscopy of normal articular cartilage (A and B, Initial) collected at the first arthroscopy to produce the osteochondral defect, and the healing tissues (Final, day 180) formed in presence (C) or absence of chitosan-GP (D). Tissue samples collected during surgery were fixed in Methacarn, transferred to 90% ethanol, dehydrated, embedded in paraffin and cut in 3 μm sections. These sections were transferred to silane-coated slides, dewaxed, and stained with hematoxylin and eosin (H & E).Back to article page