![Surfactant-free Gd
<sup>3+</sup>
-ion-containing carbon nanotube MRI contrast agents for stem cell labeling]()
Surfactant-free Gd
<sup>3+</sup>
-ion-containing carbon nanotube MRI contrast agents for stem cell labelingGizzatov, Ayrat; Hernández-Rivera, Mayra; Keshishian, Vazrik; Mackeyev, Yuri; Law, Justin J.; Guven, Adem; Sethi, Richa; Qu, Feifei; Muthupillai, Raja; Cabreira-Hansen, Maria da Graça; Willerson, James T.; Perin, Emerson C.; Ma, Qing; Bryant, Robert G.; Wilson, Lon J. · Nanoscale · 2015