IL-6 signaling in macrophages is required for immunotherapy-driven regression of tumors ======================================================================================= * Elham Beyranvand Nejad * Camilla Labrie * Marit J van Elsas * Jan Willem Kleinovink * Hans-Willi Mittrücker * Kees L M C Franken * Sylvia Heink * Thomas Korn * Ramon Arens * Thorbald van Hall * Sjoerd H van der Burg