Viruses

Khan Academy · 1.2M views · 2009 · 23:17

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Why the open web links it

Explains the biology of viruses, their structure, and how they infect host cells.

Linked by 8 independent sites, 3 of them widely read in the 2026-10 crawl of the open web, including oup.com, ucf.edu, libretexts.org, unizin.org, frankenstem.com.