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Professor Dave Explains
Viruses: Molecular Hijackers
Most of us know about viruses, and that they spread disease. But what is a virus exactly? Is it alive? How does it infect a host? There's a lot to discuss here! Take a look.
Khan Academy
Khan Academy: Viral Replication: Lytic vs Lysogenic
This video describes how viruses replicate in cells. [5:10]