Nuclear mitochondria?
Recognizable mitochondria were detected in the nucleus of a leukemic cell. It is suggested that passage through enlarged nuclear pores, incorporation within a pinched off invagination, or inclusion within the nuclear envelope at telophase may have been responsible for this unusual event.
D000818:Animals; D003585:Cell Biology; D002455:Cell Division; D002467:Cell Nucleus; D066298:In Vitro Techniques; D007938:Leukemia / Q000473:pathology*; D007942:Leukemia, Experimental / Q000473:pathology; D008854:Microscopy, Electron; D008928:Mitochondria