110,311
edits
Line 14: | Line 14: | ||
== Immune system == | == Immune system == | ||
: ''Main Article: [[Immune system]]'' | : ''Main Article: [[Immune system]]'' | ||
The immune system is a bodywide network of cells, tissues, and organs that was designed to defend the body against "foreign" invasions. The proper targets of the immune system are infectious organisms--[[bacteria]] such as [[streptococci]]; [[fungi]]; [[parasites]], including the worm-like microbes that cause [[malaria]]; and [[viruses]] such as the SARS virus.<ref>[http://www.cancer.gov/cancertopics/understandingcancer/immunesystem/Slide1 Understanding Cancer Series: The Immune System] by the the National Cancer Institute</ref> | |||
== Lymphatic system == | == Lymphatic system == |