eclipsed antigen

eclipsed antigen

[i¦klipst ′ant·i·jen]
(immunology)
An antigenic determinant of parasitic origin resembling an antigenic determinant of the parasite's host to such a degree that it does not elicit the formation of antibody by the host.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.