CD34 and neoplasm: While, the FGFR2+ cells co-express CD34, CD45 or Collagen I was elevated in active tumor-bearing mice when compared with indolent tumor-bearing or PBS-treated mice (P < 0.01 for CD34+ FGFR2+ cells; P < 0.01 for CD45+ FGFR2+ cells; P < 0.05 for Col I+ FGFR2+ cells), but returned to near-basal levels after active tumor removal.