CXCR7 signaling promotes breast cancer survival in response to mesenchymal stromal stem cell-derived factors

Bright field (upper panels) images of FaDu, MCF7, MDA-MB-231, PC-3, HT-29, and MDA-MB-468 tumor cell lines cultured in MCM or FM for 2, 4, or 6 days (10×). Representative image of H and E-stained tumor cells cultured in MCM or FM (lower panels). Images were taken on day 6 (20× (left) and 60× (right) panel). MCM human bone marrow stromal stem cells conditioned media, FM fresh medi