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Introduction to Viruses

Introduction to Viruses

Viruses are submicroscopic particles that can be seen only with a powerful electron microscope. They are not cells, but consist of genetic material, enclosed in a protective layer of protein. Learn more about the nature of viruses, and how scientists are working to understand and combat them.

Companion slide set to the video, "Introduction to Viruses."

Author(s): Sonia Rahmati Clayton, PhD, and Nancy Moreno, PhD
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Flu: The virus

Where Do Viruses Fit?

What are Viruses Made Of?

How Are Viruses Classified?

How Do Viruses Reproduce?

The Reproductive Cycle of a Retrovirus—HIV

Let's Talk About Paramecia

Viral Genomes


Funded by the following grant(s)

Video and transcript courtesy of Wah Chiu, PhD, National Center for Macromolecular Imaging at Baylor College of Medicine. Funding for the video provided by NCMI, NIH.