Upstream and downstream
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Look up downstream or upstream in Wiktionary, the free dictionary.
Upstream and downstream can refer to:
Molecular biology
- Upstream and downstream (DNA), determining relative positions on DNA
- Upstream and downstream (transduction) determining temporal and mechanistic order of cellular and molecular events of signal transduction
Computer science
- Upstream and Downstream, the notional directions which lie "towards" and "away from" the author of a piece of software, relative to the speaker