IL6 and neoplasm: MMW irradiation also induced tumor cells to secrete higher levels of immune-activating factors, such as tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and interleukin-12 (IL-12) (Fig. 5K to M), which could enhance the immune response of the body and thus clear the residual tumor more effectively [71].