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Overview of cells by SEM on a glass slide (Panel A), a CellSearch cartridge (Panel B) and a 5 μm pore microsieve (Panel C). A higher magnification of the isolated cells is shown at the right of each technique (Panels D–F). The vertical lines in panels B and E is the αEpCAM ferrofluid covering the surfaces of all isolated objects and are perfectly aligned with the magnetic field lines [20].
