Fig. 1

Magnetic applicator and experimental setup of neurite outgrowth. a Schematic illustration of the gradient magnetic field generated by the perpetual cuboid neodymium magnet applied to the cells at the center of the dish. b The angles θ between the long axis of the neurites (red dotted line) and the direction of the magnetic field (yellow solid line) (0 < θ < π). c Schematic illustration of a two-compartment microfluidic device for separating axons from cell bodies in DRG neuron culture