title: Magnetic nanoparticle-based theranostics.
abstract: This theme issue provides a timely collection of studies on magnetic nanoparticle-based imaging, bio-sensing, therapy and/or their combinations.
authors.affiliation: 1. Department of Chemistry and Bio-Imaging Research Center, University of Georgia, Athens, GA 30602, USA.
authors.forename: Jin
authors.initials: J
authors.lastname: Xie
authors.forename: Sangyong
authors.initials: S
authors.lastname: Jon