karyosome
/ˈkɛriəˌsoʊm/
noun
- A dense, compact mass of chromatin found inside the nucleus of a cell, especially during interphase.
- Changes in the karyosome can signal that a cell is about to divide.
- During interphase, the karyosome is where some genetic material is tightly packed.
- The karyosome appears as a dark spot under the microscope.