CXCR4 and neoplasm: Also, the chemokine receptor −4 (CXCR4) reactivity was also noticed in tumor cells with membranous, cytoplasmic and even nuclear pattern (Fig. 3h) Moreover, the podoplanin tumor cell reactivity, with a membranous pattern, was more obvious at the advancing edge, at the periphery of tumor proliferations (Fig. 3i).