Stem cell extraction technique uses magnets

10/2/2013 | New Scientist

Neural stem cells have been magnetically extracted from a rat's brain without harming the rodent, offering hope that the procedure can be used to harvest stem cells from humans. Edman Tsang of the University of Oxford developed a technique in which magnetic nanoparticles coated with antibodies that cling to neural stem cells are injected into the lateral ventricles of the rats' brains. After the nanoparticles attach themselves to the stem cells, a magnetic field around the rats' heads pulls the cells together so they can be extracted with a syringe.

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