Complement C4a


C4a Complement

C4a, Complement

Complement 4a

Complement Component 4a

Complement, C4a

Component 4a, Complement

The smaller fragment formed when complement C4 is cleaved by COMPLEMENT C1S. It is an anaphylatoxin that causes symptoms of immediate hypersensitivity (HYPERSENSITIVITY, IMMEDIATE) but its activity is weaker than that of COMPLEMENT C3A or COMPLEMENT C5A.