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prothrombin
protist
protium
proto-
Proto-Algonquian
Proto-Germanic
Proto-Indo-European
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proto-oncogene
Proto-Romance
Proto-Semitic
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protocol
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proto-oncogene
pro·to-on·co·gene [ prtō óngkə jn ] (plural pro·to-on·co·genes)


noun 
Definition:
 
potential cancer-producing gene: a normal gene that can mutate or be activated by a cancer-causing virus to form a cancer-producing gene
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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