Figure 2. Magnetic fields raise survival rate and inhibit tumor growth in tumor-bearing mice.

(A) Statistical analyses of survival after subcutaneous challenge of Balb/c mice with H22 cells and treated with magnetic fields using log-rank test. Mice were treated by magnetic fields (MF) for 30 days, 2 h per day, and cared without magnetic fields for another 40 days. (B) The mean mass and volume of tumor for each group after treatment with magnetic fields 30 days. ***P<0.001, Mann-Whitney U test. The Hematoxylin and eosin staining (C, 10×) and immunohistochemical staining of Ki67 (D) in tumors.