Cathedral artifact

The Cathedral artifact was a structure discovered in the Gamma Quadrant by the crew of the USS Defiant (NX-74205) (II) in 2376.

When Julian Bashir, Ezri Dax and Nog approached the artifact in the shuttlecraft Sagan, the artifact removed Bashir's genetic enhancements, caused Ezri to reject the Dax symbiont and restored Nog's leg.