Nisus

Nisus is a world in the federation that served as a science colony known for its wide diversity of species. 
By the time and after the UGI Nisus remained a Science colony independently run by its science council, without a military,and continued to serve as a center of diverse scientific minds coexisting together. 
In 2267 an epidemic dragged the Enterprise under the command of Captain James T. Kirk was stationed to help cure the plague. 
The Plague was cured by the intervention of Klingons whose blood held the cure and their scientists held a synthetic antidote for the plague.