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Tengion, Inc. was a biotechnology company focused on regenerative medicine, established in 2003 and headquartered in Winston-Salem, North Carolina. Its primary objective was the discovery, development, manufacturing, and commercialization of advanced cellular therapeutic products, often termed "neo-organs." These innovations, comprising living cells sometimes combined with synthetic or natural supporting materials, were intended for implantation or injection into the body to integrate, regenerate, or substitute for compromised tissues or organs. The company's product pipeline included two significant experimental therapies.