The host nucleus is not normally displaced.

The host nucleus may be tilted.

Gametocytes are large, round, oval or irregular in shape and are substantially larger than the host nucleus.

Mature schizonts are either smaller than or only slightly larger than the host nucleus.

The meronts surround the host nucleus and frequently induce rounding of the host cell.

Gametocytes surround the host nucleus and cause rounding of the host cell.

Schizonts contain scant cytoplasm, are often round, do not exceed the size of the host nucleus and stick to it.

The genus was created by Labbe in 1894 for those species of sporozoans that fragmented the host nucleus.

This type of virus usually must enter the host nucleus before it is able to replicate.

However, they are both involved in the import of the viral preintegration complex into the host nucleus.