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The main symmetries of viruses are:

1. Polyhedral (Icosahedral) symmetry: Spherical in shape

These include:

Naked Capsids: Example: Poliovirus, Adenovirus

Enveloped Capsids: Example: Herpes simplex virus

2. Helical (Cylindrical) symmetry:

These also include:

Naked Capsids: Example: Bacteriophage M13, Tobacco Mosaic virus (TMV)

Enveloped Capsids: Example: Influenza virus

3. Complex symmetry:

There is no clear identifiable capsid. Example: Vaccinia virus

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