Fig. 4From: Co-culture pellet of human Wharton’s jelly mesenchymal stem cells and rat costal chondrocytes as a candidate for articular cartilage regeneration: in vitro and in vivo studyMorphology of in vivo specimens and evaluation scales. A Gross view of specimens in four groups at 4, 8, 12 weeks. B–D ICRS overall, ICRS-VHAS and O’Driscoll score of four groups at 4, 8, 12 weeks (n = 4). Significant difference symbols: *p < 0.05, **p < 0.01Back to article page