National Institute of Allergy and Infectious Diseases (U.S.)National Cancer Institute (U.S.)2007-03-272007-03-272003-09National Institute of Allergy and Infectious Diseases (U.S.), & National Cancer Institute (U.S.) (2003). Understanding the immune system and how it works. Retrieved November 20, 2006, from National Institute of Allergy and Infectious Diseases web site: http://www.niaid.nih.gov/Publications/immune/the_immune_system.pdfhttps://hdl.handle.net/1805/74863 pages.Background information on the immune system and its relation to cancer. Includes an extensive glossary.2203538 bytesapplication/pdfen-USimmune systemcancerImmune system.Cancer.Book