The excessive production of cytokines has been linked to some types of cancer, e.g. IL-6 has been shown to be secreted by myeloma cells, plasmacytoma cells and cervical and bladder cancer cells. IL-6 is known to act in an autocrine manner to stimulate cell proliferation. | The excessive production of cytokines has been linked to some types of cancer, e.g. IL-6 has been shown to be secreted by myeloma cells, plasmacytoma cells and cervical and bladder cancer cells. IL-6 is known to act in an autocrine manner to stimulate cell proliferation. |