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From left, Todd Harris, graduate student in the MIT-Harvard Division of Health Sciences & Technology (HST), Sangeeta Bhatia, professor in HST, and Geoffrey von Maltzahn, graduate student in HST, view two solutions of enzyme-activated nanoparticles. The enzymes cause the nanoparticles to self-assemble into large aggregates that fall out of solution. Photo / Donna Coveney |
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