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avian leukosis-sarcoma complex

n.
  1. A division of the RNA tumor viruses that causes a group of transmissable diseases of poultry.avian leukosis-sarcoma virus
  2. The group of diseases caused by this division of viruses.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.