Chondrocytes are the cellular component of cartilage. Articular cartilage is the soft avascular tissue that covers bone surfaces in a synovial joint. Chondrocytes are isolated from knee or hip joints of a single animal, cultured until passage 1 and then cryopreserved. Post-thaw viable cells are tested for proliferation and their ability to redifferentiate into chondrocytes after being expanded (tested in micropellet culture for glycosaminoglycans release by Alcian Blue staining).
Warning: cellular products should be handled with care.