Regulation of IL-4 expression by activation of individual alleles.

Abstract excerpt

To study the in vivo role of IL-4-expressing cells, we developed a strategy to tag these cells, by generating mice in which one IL-4 allele was replaced with a cDNA encoding the human CD2 (huCD2) cell-surface molecule. Expression of the huCD2 reporter was, like IL-4, restricted to the appropriately polarized T helper 2 cells. However, most of the cells expressed only the IL-4 or the targeted allele. Analysis of...

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