One of 58 test mutations developed by Doctor Susan Noress and a four-member research team to fight a plasma plague 70 years ago in the Oby system. A sample of the plague for use in combating a plague in the Rachelis system begins growing en route, stimulated by Eichner radiation, and threatens its containment model and the bio-health of the U.S.S. Enterprise NCC-1701-D that ferries it.