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.
Complementary
Introduction
Biology
- complement system, a cascade of proteins in the blood that form part of innate immunity
- complementary DNA, DNA reverse transcribed from a mature mRNA template
- complementarity (molecular biology), a property whereby double stranded nucleic acids pair with each other
- complementation (genetics), a test to determine if independent recessive mutant phenotypes are caused by mutations in the same gene or in different genes