Figure 1.
Stat1 serine phosphorylation in response to signals of inflammation and stress. Bac1.2F5 macrophages were treated for 25 min with IFN-γ, LPS, or TNF-α or were irradiated with UV (40 J/m2). Cellular extracts were assayed in Western blots for STAT Ser727 phosphorylation and Stat1 expression.