1. Zones of loosely arranged euchromatin are located mainly in the center of the nucleus.

2. This chromatin heterochromatin. The chromatin which stains less deeply than heterochromatin is called euchromatin.

3. That which shows the " normal " condensation pattern is called euchromatin.

4. Some PRC had a multi shaped nucleus in which equal amount of euchromatin and heterochromatin.

5. Their nuclei are pale and vesicular, containing mainly unstained euchromatin.