Pharmaceutical The promise of vaccines targeted against various types of cancer has raised the hopes of patients and their families. The reality, however, is that these promising treatments are difficult to develop. One of the challenges is identifying a discrete cellular target to stop cancer growth without inactivating the immune system. Scientists at UNC Lineberger Comprehensive Cancer Center in North Carolina, USA, report a laboratory finding that has the potential to increase the effectiveness of therapeutic cancer vaccines. 16 December 2010