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The resistant System      The resistant form is a root of cells, molecules, and tissues that assist defend the body against diseases and other harmful infestrs much(prenominal) as viruses and bacteria and toxins. The repellent system provides protection against a admixture of potentially damaging substances that tummy invade the body. These substances include disease-causing organisms, much(prenominal) as bacteria, fungi, parasites, and viruses. The bodys ability to resist these invaders is called immunity. A key chemic element of the insubordinate system is its ability to destroy conflicting invaders art tendency leaving the bodys own healthy tissues alone. Sometimes, when the repellent system attacks and reparation these healthy tissues. This reaction is called an autoimmune resolution or autoimmunity.The immune system is composed of many move that work in concert to support infections when pathogens or poisons invade the human body. Pathogens are dise ase-causing organisms such as bacteria and viruses. The immune system reacts to foreign substances through a series of steps know as the immune response. all agent comprehend as foreign by a bodys immune system is called an antigen. In Which the body works to fight it .

and when the body cant fight the attacker or foreign object or attacks itself then we have a problem of immune deficit . Works Cited Direct Essays. resistant System is the most Incredible Part of our Body. DirectEssays.com. DirectEssays.com, (January 01, 2000). Web. 14 Sep. 2012. Clemems DL and MA Horwitz.  1993.  Hypoexpression of major histocompatibility comp lex molecules on Legionella pneumophila ph! agosomes and phagolysosomes.  transmission and Immunity  Brain, Marshall. How Your Immune System Works. How Stuff Works. 1 April 2000. breakthrough Health. 4 October 2010 <http://health.howstuffworks.com/human-body/systems/immune/immune-system.htm>.If you want to get a full essay, order it on our website: BestEssayCheap.com

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