Fig. 6From: Key role of MEK/ERK pathway in sustaining tumorigenicity and in vitro radioresistance of embryonal rhabdomyosarcoma stem-like cell populationFold variation of volume and stem cell markers expression in tumor xenografts. a Tumor xenografts volume from rhabdosphere cells (SC-mSPH), U0126 treated cells in SC medium (SC-m + U) and rhabdosphere cells after U0126 intraperitoneal injection (SC-mSPH, U0126 i.p.) at the end point (4 weeks after tumor development). b CD133-positive cells and c CXCR4 positive cells after digestion into single cell suspension of tumor xenografts (n = 3, **p < 0.01, *p < 0.05)Back to article page