Inside your body there is an amazing protectio­n mechanism called the immune system. It is designed to defend you against millions of bacteria, microbes, viruses, toxins and parasites that would love to invade your body.
Viral and bacterial infections are by far the most common causes of illness for most people. They cause things like colds, influenza, measles, mumps, malaria, AIDS and so on. The job of your immune system is to protect your body from these infections. The immune system protects you in three different ways: 1  It creates a barrier that prevents bacteria and viruses from entering your body. 2  If a bacteria or virus does get into the body, the immune system tries to detect and eliminate it before it can make itself at home and reproduce. 1 The immune system is a system of many biological structures and processes within an organism that protects against disease. To function properly, an immune system must detect a wide variety of agents, known as pathogens, from viruses to parasitic worms, and distinguish them from the organism's own healthy tissue. Disorders of the immune system can result in autoimmune diseases, inflammatory diseases and cancer. Immunodeficiency occurs when the immune system is less active than normal, resulting in recurring and life-threatening infections. By Laasya Samhita | December 12, 2013. Bacteria exposed to antibiotics rapidly acquire mutations that allow them to develop resistance to the drugs, and this process is fairly well understood. Scientists have now looked at the evolution of bacterial resistance toward live agents: cells of the immune system.  But until now, scientists have not known the mechanism by which bacteria help the immune system. Knight's lab studied the spores from rod-shaped bacteria called Bacillus, found in the digestive tract. (A spore consists of the DNA of a bacterium, encased in a shell. Bacteria form spores during times of stress, and re-emerge when conditions improve.) Researchers found that when they exposed immune system cells called B lymphocytes to bacterial spores, the B cells began dividing and reproducing.  Lymph contains tissue fluid, waste products, and immune system cells. Lymph nodes are small, bean-shaped clumps of immune system cells that are connected by lymphatic vessels. They contain white blood cells that trap viruses, bacteria, and other invaders, including cancer cells. White blood cells are the cells of the immune system. They are made in one of your lymph organs, the bone marrow. Other lymph organs include the spleen and thymu Even simple unicellular organisms such as bacteria possess a rudimentary immune system, in the form of enzymes that protect against bacteriophage infections. Other basic immune mechanisms evolved in ancient eukaryotes and remain in their modern descendants, such as plants and insects. Disorders of the immune system can result in autoimmune diseases, inflammatory diseases and cancer. Immunodeficiency occurs when the immune system is less active than normal, resulting in recurring and life-threatening Inside your body there is an amazing protectio­n mechanism called the immune system. It is designed to defend you against millions of bacteria, microbes, viruses, toxins and parasites that would love to invade your body. To understand the power of the immune system, all that you have to do is look at what happens to anything once it dies. Every second of your life you are under attack. Bacteria, viruses, spores and more living stuff wants to enter your body and use its resources for itself. The immune system is a powerful army of cells that fights like a T-Rex on speed and sacrifices itself for your survival. Without it you would die in no time 1 If a bacteria or virus does get into the body, the immune system tries to detect and eliminate it before it can make itself at home and reproduce. 2  If the virus or bacteria is able to reproduce and start causing problems, your immune system is in charge of eliminating it. 1 It creates a barrier that prevents bacteria and viruses from entering your body. 2  Disorders of the Immune System. Your immune system is your body's defense against infections and other harmful invaders. Without it, illnesses from bacteria or viruses, for example, would be constant. Your immune system is made up of special cells, tissues, and organs that work together to protect you. Lymph nodes are small, bean-shaped clumps of immune system cells that are connected by lymphatic vessels. They contain white blood cells that trap viruses, bacteria, and other invaders, including cancer cells. White blood cells are the cells of the immune system.
http://health.howstuffworks.com/human-body/systems/immune/immune-system3.htm https://en.wikipedia.org/wiki/Immune_system http://www.the-scientist.com/?articles.view/articleNo/38623/title/How-Bacteria-Evade-the-Immune-System/ http://phys.org/news/2010-06-bacteria-boost-immune.html http://www.urmc.rochester.edu/encyclopedia/content.aspx?ContentTypeID=134&ContentID=123 https://en.wikipedia.org/wiki/Immune_system http://health.howstuffworks.com/human-body/systems/immune/immune-system.htm http://www.youtube.com/watch?v=zQGOcOUBi6s http://health.howstuffworks.com/human-body/systems/immune/immune-system3.htm http://www.urmc.rochester.edu/encyclopedia/content.aspx?ContentTypeID=134&ContentID=123
bacterial immune system