immunopotentiation

[ĭm′yə-nō-pə-tĕn′shē-āshən, ĭ-myōō′-]
n.
  1. Enhancement of the immune response by increasing the speed and extent of its development and by prolonging its duration.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.