Figure 4From: Role of mesenchymal stem cells in meniscal repair Treatment of meniscal defects (rabbit) in the avascular zone with a mesenchymal stem cell matrix composite resulted in defect filling with a differentiated meniscus like tissue compared to implantation of a cell free scaffold: Representative macroscopic views, histological (toluidine blue) and immunohistochemical (collagen type II) slides of menisci and the meniscal repair tissue 3Â months after treatment of circular meniscal punch defects in the avascular zone; A, B, C: treatment with hyaluronan-collagen composite matrices loaded with mesenchymal stem cells; D, E, F: treatment with a cell-free composite matrix (control). Back to article page