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leukon

[lōō′kŏn′]
n.
  1. The total mass of circulating white blood cells, their precursors, and the leukopoietic cells from which they arise.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

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