We observed that treatment with neutralizing antibodies against IL-6 and/or G-CSF in vehicle treated wells did not have any effect on proliferation, whereas neutralizing antibodies against IL-6 and/or G-CSF in docetaxel-treated wells inhibited cancer cell proliferation (Fig 2I), with no rescuing effect on stromal cell proliferation (Fig 2J). This evidence concerns the gene IL6 and cancer.