  The charges in live cells interact with or produce electric fields, which
results in enormous dielectric responses, flexoelectricity, and related
phenomena. Here we report on a contraction of schizosacchraoymces pombe
(fission yeast) cells induced by magnetic fields, as observed using a phase
sensitive projection image technique. Unlike electric fields, magnetic fields
only act on moving charges. The observed behavior is quite remarkable, and may
result from a contractile Lorentz force acting on diamagnetic screening
currents. This would indicate extremely high intracellular charge mobilities.
Besides, we observed a large electro - optical response from fission yeast
cells.
