Autologous cultured chondrocytes, the Carticel (autologous cultured chondrocytes for implantation) product, are derived from in vitro expansion of chondrocytes harvested from the patient's normal, femoral articular cartilage. Biopsies from a lesser-weight bearing area are the source of chondrocytes, which are isolated, expanded through cell culture, and implanted into articular cartilage defects beneath an autologous periosteal flap. Prior to final packaging, cell viability is assessed to be at least 80%.

Each single use container of autologous cultured chondrocytes has approximately 12 million cells aseptically processed and suspended in 0.4 mL of sterile, buffered Dulbecco's Modified Eagles Medium (DMEM). Both the biopsy transport media and the cell culture media contain gentamicin. Residual quantities of gentamicin up to 5 ?g/mL may be present in the Carticel (autologous cultured chondrocytes for implantation) product.

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