CELLvo™ Healthy Human Chondrocytes (50-70y) are primary, uncultured cells isolated from recently-diseased cadaver cartilage from donors between 50 and 70 years old. Healthy status is determined by macroscopic inspection of the tissue using a modified outerbridge (1960) scale in order to distinguish healthy joints from those with signs of osteoarthritis. Cells are isolated by enzymatic digestion prior to cryopreservation.