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.
C3a (complement)
Introduction
C3a is a one of the elements formed by the cleavage of complement component 3.
C3a plays an important role in chemotaxis, though not as important a role as C5a.[1]
It is also an anaphylatoxin.