PALO ALTO, Calif.--(BUSINESS WIRE)--StemCells, Inc. (NASDAQ: STEM) today announced the publication of a paper describing a new technique for non-invasive tracking of human neural stem cells transplanted into the brains of mice. The technique involves tagging the human neural stem cells with Feridex®, a commonly used magnetic resonance imaging agent approved by the United States Food and Drug Administration (FDA) for use in humans. Tagging the human neural stem cells in this way does not appear to alter the stem cells’ function or viability. The paper, entitled “Long-term monitoring of transplanted human neural stem cells in developmental and pathological contexts with magnetic resonance imaging,” appears in this week’s online edition of the Proceedings of the National Academy of Sciences.