Tengion, Inc. operates as a regenerative medicine company. The company focuses on discovering, developing, manufacturing, and commercializing a range of neo-organs or products composed of living cells with or without synthetic or natural materials that are implanted or injected into the body to engraft into, regenerate, or replace a damaged tissue or organ. Its product portfolio includes Neo-Kidney Augment to prevent or delay dialysis by increasing renal function in patients with advanced chronic kidney disease; and Neo-Urinary Conduit, which is in Phase I clinical trial and used to replace the use of bowel tissue in bladder cancer patients requiring a non-continent urinary diversion after bladder removal surgery.