CXCR4 and neoplasm: To evaluate expression of these phenotypes in cell based model, we analyzed the expression of the commonly used tumor markers phosphorylated NF-kB (p-NF-kB), phosphorylated STAT (p-STAT), CXCR4 and phosphorylated extracellular signal-regulated kinase (p-ERK) MAP kinase, by immunofluorescence.