Abstract
We discovered that the motion of adherent cells was influenced by strong static magnetic fields and was parallel to the magnetic fields. A real-time observation of living cells in the presence of magnetic fields inside the bore of a superconducting magnet was performed by using a charge-coupled device camera with a monozoom lens. Fibroblastlike cells (MC3T3-E1) were cultured and observed by a video microscope system during magnetic-field exposures at 8T. During the exposure, most cells showed a back-and-forth motion along the direction of the magnetic field. Specifically, the direction of cell extension immediately after cell division was parallel to the magnetic field. Cytoskeletons inside the cells were oriented in parallel with the magnetic fields, and introduced a cell motion parallel with the magnetic field. Our experiments showed that living cells consisting of diamagnetic materials had their motion restricted by the direction of the applied magnetic field.
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