Main Category: Immune System / Vaccines Also Included In: Infectious Diseases / Bacteria / Viruses Article Date: 07 Jan 2013 - 1:00 PST The human body contains immune cells programmed to fight cancer and viral infections, but they often have short lifespans and are not numerous enough to overcome attacks by particularly aggressive malignancies or ... (more)
http://www.medicalnewstoday.com/releases/254602.php
http://www.medicalnewstoday.com/releases/254602.php
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