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mEHT induced blocking of cell cycle progression. Nuclear Ki67 positivity indicating tumor cell proliferation is ceased in the mEHT damaged central tumor regions (left), even in cells showing only early signs of apoptosis. Gradually higher magnifications (middle and right). The lymphoid germinal center (middle, arrowhead) serves for Ki67 positive control. Scale bar shows 2 mm on left, 200 µm on middle and 60 µm on right images.
