from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Any of various lymphocytes that recognize and lyse target cells bearing a specific foreign antigen, usually by infection with a virus, and that also function in defense against cancer cells.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun T cell with CD8 receptor that recognizes antigens on the surface of a virus-infected cell and binds to the infected cell and kill it
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