Cell stimulation using direct vibration with magnetic beads and development of a measurement system

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Cell stimulation system using direct viblation with magnetic beads, which has a diameter of several micro meters, attached on the cell wall has been developed to investigate the expression of cell function with the vibration stimuli. The attaced magnetic beads are vibrated with an alternating magnetic field and the vibration amplitude is measured by newly developed optical system. The magnetic beads were vibrated with maximum oscilation amplitude of 451 nm with a excitation frequency of 80 Hz.