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proto-oncogene

[ proh-toh-ong-kuh-jeen ]
/ ˌproʊ toʊˈɒŋ kəˌdʒin /
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noun
a normally present gene that appears to have a role in the regulation of normal cell growth, but that is converted to an oncogene by mutation.

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

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