Effects of alternating magnetic field (12 gauss) on transplanted neuroblastoma.

Exposure of A/J animals bearing transplanted neuroblastoma (C1300) to a 12 Gauss, 60Hz magnetic field for 16 days, starting 3 days post transplant resulted in - (a) early slowing of tumor growth, (b) more free red blood cells in the tumor areas and (c) a tendency to focal tumor cell destruction suggesting that a small alternating magnetic field may affect transplanted tumor growth.