karyozoic

kar·y·o·zo·ic

(kar'ē-ō-zō'ik),
Denoting a parasite inhabiting the cell nucleus of its host.
[karyo- + G. zōon, animal]

karyozoic

(kăr″ē-ō-zō′ĭk) [″ + zoon, animal]
Living in the cell nucleus, as would occur with an intracellular protozoal parasite.