immune system definition biology
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STNA Vocabulary A system (including the thymus and bone marrow and lymphoid tissues) that protects the body from foreign substances and pathogenic organisms by producing the immune response.A system that provides a defense mechanism to organism, providing defensive measures against antigens which would prove harmful to the organism.
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- Immune system. (Science: immunology) The body system, made up of many organs and cells, that defends the body against infection, disease and foreign substances. The immune system is often stimulated in specific ways to fight cancer cells.
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immune immune. 1. being highly resistant to a disease because of the formation of humoral antibodies or the development of immunologically competent cells, or both, or as a result of some other mechanism, as interferon activities in viral infections.ypersensitivity is the result of an overreaction to substances entering the body. Examples of this kind of inappropriate immune response include hay fever, drug and food allergies, extrinsic asthma, serum sickness, and anaphylaxis.
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Immune System The immune system is made up of a complex network of cells and organs that protect the body from infection. The Immune System-Click to Enlarge. Lymph nodes are part of the immune system. They release lymphocytes, a certain type of white blood cell that fights infection.
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- The immune system is a complex system of interacting cells whose primary purpose is to identify foreign (“non-self”) substances referred to as antigens. The immune system provides protection from infectious disease by identify most of these microbes as foreign.he immune system could be described as a sensory organ much like vision, hearing and touch. Instead of recognising light, sound waves or large objects, the immune system recognises molecular shapes-only a few amino acids in length.
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Immune system 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.he cells of the adaptive immune system are special types of leukocytes, called lymphocytes. B cells and T cells are the major types of lymphocytes and are derived from hematopoietic stem cells in the bone marrow.
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immune immune. adj. 1. (Medicine) protected against a specific disease by inoculation or as the result of innate or acquired resistance. 2. (Biology) relating to or conferring immunity See antibody: an immune body.o make immune to a disease, especially by an injection of a weak form of the disease.
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The Immune System -- An Overview Reviewed October 2008. The immune system is composed of many interdependent cell types that collectively protect the body from bacterial, parasitic, fungal, viral infections and from the growth of tumor cells. Many of these cell types have specialized functions.
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Immune System and Disorders Your immune system is a complex network of cells, tissues, and organs that work together to defend against germs. It helps your body to recognize these foreign invaders. Then its job is to keep them out, or if it can't, to find and destroy them. If your immune system cannot do its job, the results can be serious.
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Immunity (medical) Immunity (medical) In biology, immunity is the balanced state of multicellular organisms having adequate biological defenses to fight infection, disease, or other unwanted biological invasion, while having adequate tolerance to avoid allergy, and autoimmune diseases. Contents.
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Immune system The immune system is involved in many aspects of physiological regulation in the body. The immune system interacts intimately with other systems, such as the endocrine and the nervous systems. The immune system also plays a crucial role in embryogenesis (development of the embryo), as well as in tissue repair and regeneration.
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- The immune system, which is made up of special cells, proteins, tissues, and organs, defends people against germs and microorganisms every day. In most cases, the immune system does a great job of keeping people healthy and preventing infections.
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Immune system immune system, a system of tissues, organs, and cells that protects the body against pathogenic organisms and other foreign bodies. The principal components of the immune system include the bone marrow, the thymus, and the lymphoid tissues.
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What Are Antibodies? - Definition, Function & Types Antibodies Defined. Antibodies are proteins that are produced by the immune system to help stop harm from occurring. They are also called immunoglobulins. When an intruder, such as a virus, bacteria, or other chemical, enters the body, the immune system springs into action.These invaders, antigens, are met by the B cells (a type of white blood cell from the immune system).These B cells will begin to create Y-shaped proteins called antibodies that begin the process to destroy the antigen and to protect the body from harm and infection.hese invaders, antigens, are met by the B cells (a type of white blood cell from the immune system). These B cells will begin to create Y-shaped proteins called antibodies that begin the process to destroy the antigen and to protect the body from harm and infection.
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- 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.s with B cells, each type of T cell recognizes a different antigen. Killer T cells are activated when their T cell receptor (TCR) binds to this specific antigen in a complex with the MHC Class I receptor of another cell. Recognition of this MHC:antigen complex is aided by a co-receptor on the T cell, called CD8.
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Immune system The immune system is the set of tissues which work together to resist infections. The immune mechanisms help an organism identify a pathogen, and neutralize its threat.The immune system can detect and identify many different kinds of disease agents. Examples are viruses, bacteria and parasites.The immune system can detect a difference between the body's own healthy cells or tissues, and 'foreign' cells.he immune system can detect a difference between the body's own healthy cells or tissues, and 'foreign' cells.
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Immune system Immunology is a science that examines the structure and function of the immune system. It originates from medicine and early studies on the causes of immunity to disease. The earliest known reference to immunity was during the plague of Athens in 430 BC.
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- The immune system is an organ system which protects the body from sickness. The immune system’s important defenders are white blood cells found in the blood. Two broad classes of white blood cells are lymphocytes and macrophages. Two important types of lymphocytes are B cells and T cells.
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Function and Role of Immune System The immune system attacks these disease causing organisms through a sequence of steps referred to as the immune response. The immune system is composed of a number of cells, tissues and organs that work in association and attacks the disease causing microorganisms and protect the human body.
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About Lymphocytes and Phagocytes...? The immune system is the body's defense against infectious organisms and other invaders. Through a series of steps called the immune response, the immune system attacks organisms and substances that invade body systems and cause disease. The immune system is made up of a network of cells, tissues, and organs that work together to protect the body. One of the important cells involved are white blood cells, also called leukocytes, which come in two basic types that combine to seek out and destroy disease-causing organisms or substances.
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- Definition. Innate immunity is an immunological subsystem that comprises the cells and mechanisms that provide the first line of defence from infection in a non-specific manner. Innate immune responses are rapid and independent of antigen.Innate immune systems are found in all classes of plants and animals.nnate immunity is an immunological subsystem that comprises the cells and mechanisms that provide the first line of defence from infection in a non-specific manner.
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The Immune System The immune system is made up of a complex and vital network of cells and organs that protect the body from infection. Click Image to Enlarge. The organs involved with the immune system are called the lymphoid organs.They affect growth, development, and the release of lymphocytes (a certain type of white blood cell).he immune system keeps infectious microorganisms, such as bacteria, viruses, and fungi, out of the body. It also destroys any infectious microorganisms that do invade the body.
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immunity immunity. 1  the state of being immune from or insusceptible to a particular disease or the like. 2  the condition that permits either natural or acquired resistance to disease. 3  the ability of a cell to react immunologically in the presence of an antigen. 4  exemption from any natural or usual liability.
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Immune System Research Immune System The immune system is a network of cells, tissues, and organs that work together to protect the body from infection. Although scientists have learned much about the immune system, they continue to study how the body targets invading microbes, infected cells, and tumors while ignoring healthy tissues.he immune system is a network of cells, tissues, and organs that work together to protect the body from infection. Although scientists have learned much about the immune system, they continue to study how the body targets invading microbes, infected cells, and tumors while ignoring healthy tissues.
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What is immunity? Immunity means that your body's defense system has recognized a specific type of infection, either by being exposed to it or by vaccination. The body’s cells are then prepared to fight this type of infection. There are many parts of the body's immune system, including antibodies and other types of fighter cells.
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Immune System Research The immune system is a network of cells, tissues, and organs that work together to protect the body from infection.Why Is Immune System Research a Priority for NIAID?Although scientists have learned much about the immune system, they continue to study how the body targets invading microbes, infected cells, and tumors while ignoring healthy tissues.