The resonance curve in the experiment with electrodes outside the cell. Cell with external electrodes and polarization 80 mV, Temperature : 22°C, L- glutamic acid 38 mg/ml, pH 2.89. B: 40 μT, Bo : 40 nT, Sweep time: 100 sec, Total data current recorded :100 sec, Scan rate :100 point/sec, Peak resonance frequency 4,119 Hz. The resonance peak with maximum near the cyclotron frequency of about 4.0 Hz. The abscissa: the scanning of frequency of alternating magnetic field. The ordinate: the current in the coil detector.