D. Redden was a Xenobiologist at Area 51. She was brought to Stargate Command to perform an autopsy on an alien carcass retrieved from P9J-333. She discovered the Interdimensional parasite inside the carcass, and it attempted to attack her. She then determined the creature was a Travora that had mutated due to the radiation for the parasite. (SG1: "Uninvited")