Figure 3From: An in vitrostudy investigating the survival and phenotype of mesenchymal stem cells following injection into nucleus pulposus tissuePhenotypic characteristics of native disc cells. Photomicrographs representative of type II collagen and aggrecan immunohistochemical staining in control (that is, noninjected) tissue explants of nucleus pulposus tissue. Scale bar = 570 μm.Back to article page