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at present, the second sentence of the second paragraph doesn't make any sense; it is imprecise and apparently self-contradictory, with respect to the expression of CD4 or CD8 on the surface of gamm-delta T-cells. I'm not familiar with the specifics of this biology, but perhaps someone who is can correct and clarify this entry. -- 76.124.90.83 ( talk) 03:39, 25 February 2008 (UTC) reply