The cranial nerve cluster was a section of Cardassian brains.

In 2370, Elim Garak guessed that Doctor Julian Bashir would find a slight deterioration of his cranial nerve cluster. Bashir told him it was more serious than that and felt Garak needed to get to Deep Space 9's infirmary immediately. (DS9: "The Wire")

Community content is available under CC-BY-NC unless otherwise noted.