Cells that are in the late anaphase or telophase stages of cell division are vulnerable to damage by AC electric fields that have specific frequency and field strength characteristics. The selective destruction of rapidly dividing cells can therefore be accomplished by imposing an AC electric field in...http://www.google.ca/patents/US20060167499?utm_source=gb-gplus-sharePatent US20060167499 - Treating a tumor or the like with electric fields at different orientations