Expression of CXCR4 and CB<sub>2</sub> receptors in primary breast cancer tissues and cell lines.

<p>(A) Representative photomicrographs of immunohistochemical staining of primary breast cancer tissues showing CXCR4 and CB<sub>2</sub> staining. Scale bars 50 µm and 200 µm. (B). FACS analysis of cell surface expression of CXCR4 and CB<sub>2</sub> in MCF-7/CXCR4, SCP2 and MMTV-<i>neu</i> (NT 2.5) cells.</p>