PECAM1 and cancer: Primary cultures of mouse bone marrow mononuclear cells were treated with Resovist® (a superparamagnetic iron oxide NPs) and characterized by flow cytometry using a panel of antibodies recognizing CD133 (a cancer cell marker), CD31, CD34 (a marker for human hematopoietic stem/progenitor cells), CD45 (a marker for hematopoietic cells), kinase domain receptor, and F4/80 (a marker for murine macrophages).