Biology / Bio 1931 · Atom · ~20 seconds

Oncogenic Viruses

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An oncogenic virus can cause cancer by introducing genes that drive unregulated cell growth or by disrupting genes that normally restrain it.

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Human papillomavirus is oncogenic and is associated with cervical cancer; hepatitis C virus is linked to liver cancer after chronic infection.

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Most viral infections are not oncogenic— only viruses interfering with cell-cycle regulation carry this added cancer risk.