The Seed

The clone of Dr. Carson Beckett is removed from stasis to receive a possible cure, and in turn is the only one who possibly can find a cure for a serious medical problem before it is too late for one of his closest friends. Dr. Keller is being used to grow a Wraith ship which takes over a section of Atlantis. Eventually Sheppard is able to deliver Beckett's cure to Keller and save her and Atlantis.