Immunology question
-
Which complement component is the most potent anaphylatoxin?
A. C1q
B. C3a
C. C4b
D. C5a
E. C9
@surgery@isurg.org
@eeeee@community.nodebb.org -
Anaphylatoxins are complement fragments that trigger mast cell degranulation → histamine release → vasodilation, increased vascular permeability, and smooth muscle contraction.
Main anaphylatoxins: C3a, C4a, C5a.
Of these, C5a is the most potent → also a powerful chemotactic factor for neutrophils.
C1q, C4b, C9 are not anaphylatoxins.
Hello! It looks like you're interested in this conversation, but you don't have an account yet.
Getting fed up of having to scroll through the same posts each visit? When you register for an account, you'll always come back to exactly where you were before, and choose to be notified of new replies (either via email, or push notification). You'll also be able to save bookmarks and upvote posts to show your appreciation to other community members.
With your input, this post could be even better 💗
Register Login