Article Takedown/Update Request

This is an update request for the document Superparamagnetic Iron Oxide Nanoparticles Function as a Long-Term, Multi-Modal Imaging Label for Non-Invasive Tracking of Implanted Progenitor Cells by Christina A. Pacak, Peter E. Hammer, Allison A. MacKay, Rory P. Dowd, Kai-Roy Wang, Akihiro Masuzawa, Bjoern Sill, James D. McCully and Douglas B. Cowan

Your paper was deposited in MUCC (Crossref) and appears online at https://doi.org/10.1371/journal.pone.0108695
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