
Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Upstream (molecular biology)
Introduction
In molecular biology, upstream and downstream can refer to:
- 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
