Cytopathic Effects

Cytopathic effects are the observable damages that a virus does to the cell, and can be used to help identify a virus in a culture, which would otherwise be impossible to do.

Giant cells
These cells are cells that are fused together to form a giant cell. These cells look larger than normal and are multinucleated. This type of cytopathic effect can be caused by

Inclusion bodies
Big masses of viruses