leukapheresis

[ lōō′kə-fə-rēsĭs ]

n.

The removal of a quantity of white blood cells from the blood of a donor with the remaining portions of the blood retransfused into the donor.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.