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upstream |
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upstream a term used in molecular biology to describe nucleotides of a nucleic acid molecule which lie in the 5′ direction from a particular reference point such as the site of initiation of transcription. See also downstream. upstream activating site DNA sequences that are upstream from the promoter and have a regulatory role in transcription. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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upright tilt test uprighting spring Uprima upset stomach upside-down films upsilon upstream upstream activating site upstream procedure uptake upward-and-downward squint UR ur(o)- ur- Ur-defenses |
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