Key points from article :
Cells inside the body can be tracked using magnetic core-shell iron nanowires as contrast agents.
Can implant into live cells and use MRI scanning to detect those cells' location inside a living being.
Can magnetically guide them to go to a specific location, to carry drugs, or to be heated with a laser.
Could potentially be used as "theranostic" agents, able to identify, track and take out target cells.
Research by King Abdullah University of Science & Technology.
