Abstract
The common ß-chain (ßc) is the main signaling component of the heterodimeric receptors for IL-3, IL-5, and GM-CSF and is
primarily expressed on myeloid cells. The proximal ßc promoter is regulated by GGAA binding proteins, including PU.1, a
hemopoietic specific member of the Ets family. However, it is not likely that PU.1
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