Influence of alternating magnetic fields on a two-dimensional tumor growth

We have studied the effect of an alternating magnetic field on the growth r ate of the two-dimensional C6 rat glioma tumor. Tumors growing on a plate s urface were subjected to a 10-mT magnetic field at frequencies from 10 to 5 0 Hz. The rate of tumor growth at each frequency studied was measured and c ompared with a control group growing in the absence of the field. Tumor gro wth rate at each frequency was increased compared with a control group. The highest growth rate was observed with a magnetic field at a frequency of 2 0 Hz.