Unlike most other cells, mannose residues (green) are abundant on the MSC cell membrane. Using an MRI technique that is sensitive to the presence of mannose, tracking of transplanted MSCs is now possible without the need of labeling them. Credit: Shreyas Kuddannaya
https://www.technologynetworks.com/cell-science/news/sugar-molecules-can-be-used-to-track-stem-cells-358338