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transact
transactinide
transaction
transaction costs
transactional analysis
transactional immunity
transactions demand for money
transactions motive
transactivation
transalpine
transaminase
transamination
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transactivation

trans·ac·ti·va·tion [ tranz àkti váysh'n, transs àkti váysh'n ]


noun 
Definition:
 
one virus's activation of another: the process whereby an infecting virus activates another virus's genes that are already integrated into the chromosome of the host bacterium, inducing the host cell to replicate the initial virus

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