Figure 3

CXCR4 expression in human papillary thyroid carcinoma tissue. (A) immunohistochemical localization of CXCR4 protein was cytoplasmic. (B) In some cases carcinoma cells showed positive staining in the membrane. (C) In the tumor in which CXCR4 immunodetection are unreactive, staining for CXCR4 occurred in inflammatory cells.