title: Applying pressure on macrophages.
abstract: In this issue of Immunity, Cortez-Retamozo et al. (2013) demonstrate that the increased production of angiotensin II in tumor-bearing mice induces the expansion of macrophage progenitors and the supply of macrophages.
authors: H. Lee Moffitt Cancer Center and Research Institute, MRC 2067, 12902 Magnolia Dr., Tampa, FL 33647, USA. dmitry.gabrilovich@moffitt.org
authors: Dmitry I
authors: DI
authors: Gabrilovich