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Transduced canine olfactory bulb-derived neural progenitor cells labeled with superparamagnetic iron oxide particles. (A) The superparamagnetic iron oxide particles are present in a paranuclear pattern in the cells (Nomarski optics). (B) The same field as (A) visualized with fluorescent microscopy. The cells labeled with black arrowheads in (A) correspond to the fluorescently labeled cells (white arrowheads) in (B). (C) Merged image of (A) and (B). Scale bars = 25 μm.
