decay accelerating factor(redirected from Antigens, cd55)
decay accelerating factor[di¦kā ik′sel·ə‚rād·iŋ ‚fak·tər]
A plasma protein involved with complement regulation on the red blood cell surface; it accelerates the breakdown of C3 and C5 convertases. Abbreviated DAF.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.