An apparatus for selectively destroying dividing cells in living tissue, the dividing cells having polarizable or polar intracellular members, the apparatus comprising: a first insulated electrode having a first conductor； a second insulated electrode having a second conductor； an electric field source for applying an alternating electric potential across the first and second conductors, wherein passage of the electric field through the dividing cells in late anaphase or telophase transforms the electric field into a non-homogenous electric field that produces an increased density electric field in a region of a cleavage furrow of the dividing cells, the non-homogeneous electric field produced within the dividing cells being of sufficient intensity to move the polarizable intracellular members toward the cleavage； a temperature sensor for sensing temperature of the living tissue； and a controller which controls the amplitude of the electric field generated by the electric field source so as not to generate excessive heating of the living tissue.
