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We report Static Magnetic Field (SMF) induced altered sub-cellular streaming,which retains even after withdrawal of the field. The observation isstatistically validated by differential fluorescence recovery afterphoto-bleaching (FRAP) studies in presence and absence of SMF, recovery ratebeing higher in presence of SMF. This instant magneto-sensing by live cells canbe explained by inherent diamagnetic susceptibility of cells and alternativelyby spin recombination, e.g., by the radical pair mechanism. These arguments arehowever insufficient to explain the retention of the SMF effect even afterfield withdrawal. Typically, a relaxation time scale at least of the order ofminutes is observed. This long duration of the SMF effect can be explainedpostulating a field induced coherence that is followed by decoherence after thefield withdrawal. A related observation is the emergence of enhanced magneticsusceptibility of cells after magnetic pre-incubation. This implies onset of anew spin equilibrium state as a result of prolonged SMF incubation. Lastly,translation of such altered spin states to a cellular signal that leads to analtered sub-cellular streaming, probable intracellular machineries for thistranslation being discussed in the text.

Instant Response of Live HeLa Cells to Static Magnetic Field and Its Magnetic Adaptation