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VPA or VPA‐IFN‐α modifies intracellular integrin proteins. Caki‐1 cells were incubated with IFN‐α, with low‐ (0.25 mM) or high‐dosed (1 mM) VPA, with VPA‐IFN‐α combination or remained untreated (control). Incubation lasted for three or five days. Cell lysates were then analysed by specific antibodies against integrin subtypes as listed in materials and methods. The β‐actin served as the internal control. One representative experiment of three is shown.
