Fig. 3From: Magnetocontrollability of Fe7C3@C superparamagnetic nanoparticles in living cellsAs a cell changes the direction of its movement (the movement direction indicated by an arrow on this drawing for each time point), MNPs (indicated by black dots) in the cell can keep their position on the side facing the magnet (its position is down in this case). See also Additional file 3: Movie 3Back to article page