What is an immune system \ndoctor called?
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Definitely an immunologist - I was a specialist at one time in leukemia research (immuno-oncology). \n\nHowever, you will find many doctors have some knowledge of immunology. Depending on your needs. \n\nSome dermatologists (skin doctors) work quite a bit in immunology in regards to contact allergies. \n\nEar Nose and Throat specialists work with immunology for inhalation allergies.\n\nIf this is a homework assignment, go with IMMUNOLOGIST.
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When an unknown virus, microbe, protein, etc (foreign stuff) called in general antigen, enters the organism, the organism responses to it, in a specific way and tries to fight it. Immunology studies the agents in the organism that respond to the antigen (called antibodies) and the mechanisms by which they fight it.
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The skin is the first line of defense. Mucus membranes in the nose and and cilia in the respiratory system also help to trap bacteria and 'sweep' it out of the body. The Immune system patrols the blood and lymph vessels of the body looking for intruders that make it past the first line of defense. Different cells in the immune system have different functions. Some cells (phagocytes) are ingest foreign invaders. Some cells are markers that flag foreign substances for attack by other immune system cells. \nHere's a few sources to help you better understand how the different immune system cells work together to protect the body.
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The lymphatic system is a good answer as it filters the blood, easing the effort the immune system must make, as well as draining fluid so as to not overwork the circulatory system.  The hematopoietic system (which makes blood cells) also makes the primary components of both systems - white blood cells for the immune system, and all the cellular components on the bloodstream for the circulatory system.
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The cell-mediated response involves cells that are specific to the antigens on the invading pathogens. These cells are called T cells. The T-cells develop surface receptors called T-cell receptors where they become programmed for the antigen of a specific pathogen.  Some of the T cells recognize and destroy foreign cells.  Hope this helps. I just had an exam on it and passed!!
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Lymph nodes are any of numerous oval bodies, distributed throughout the lymphatic system, that produce and house lymphocytes (white blood cells formed in lymphatic tissue) and filter microorganisms and other particles from lymph. \nThey are a defense mechanism of the body against infection and disease.
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The HLA, also known as the MHC, is the system of antigens that you have on all nucleated cells of your body.  This system allows lymphocytes and monocytes to tell the difference between self and non-self.  In other words, it's because of these antigens that you're body (in a healthy working state) doesn't attack and destroy its self with its own immune system.\nDefects in this system, either in the white blood cells or the antigens themselves, lead to autoimmune disorders, like Lupus, Rheumatoid Arthritis, Myasthenia Gravis, etc. . .\nThe HLA system is also the reason why tissue and organ transplants can be so tricky.  Everyone's HLA antigens are different and one person's body won't see another person's HLAs as self (so it sees it as foreign and "rejects" or destroys the transplanted tissues).
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im·mu·nol·o·gy-n. \nThe branch of biomedicine concerned with the structure and function of the immune system, innate and acquired immunity, the bodily distinction of self from nonself, and laboratory techniques involving the interaction of antigens with specific antibodies.\n\nso i guess figure it out from there...
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lymph nodes are a part of your immune system & when they swell, it's usually them trying to fight off an infection
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a disease that affects your immune system
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Allergies are the body's inappropriate reaction to a normally benign protein, which the body sees as an invader. Note that allergies are ALWAYS to a protein. Intolerances as well as sensitivities are different from allergies in that it is not necessarily to a protein - such as lactose intolerance - but can produce similar symptoms.\n\nThe immune system is designed to watch for and attack invading cells which come into our bodies, such as viruses and bacteria. Sometimes, though, the immune system sees something which isn't bad for us, such as pollen, dander, even foods, as an invader, and it goes on the attack. Mast cells rush to the scene, releasing their load of chemicals, and calling in other inflammatory cells of the immune system, such as basophils and Killer T-cells. All the chemicals these cells release are what cause the symptoms of allergy, including hives, running nose, itchy eyes, sneezing, coughing, etc. One of the main chemicals involved is histamine, which is why antihistamines (also known as histamine blockers) are prescribed for allergies.
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It's called a SEROLOGY.\n\nSerology is a blood test to detect the presence of antibodies of a certain disease or microorganisms.
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Normally, the body learns to defend itself through experience - by encountering, battling and remembering one enemy after another. For decades, medical science has taken advantage of this ability by using vaccination to create immunity - the immunologic "memory" of a disease. Allergic reactions occur after the immune system mistakenly learns to recognize innocent foreign substances (allergens) as potentially harmful.\n\nThe following story illustrates how an allergy can develop:\n\nOver a field of ragweed plants floats an invisible cloud of pollen grains, soon carried by the wind into a nearby town. The pollen is inhaled by a child whose body has never been exposed to this substance before.\n\nBecause of some genetic predisposing factor, this child's immune system overreacts and produces large numbers of IgE antibodies, all specially designed to respond to ragweed pollen. Several of the antibodies attach themselves to cells in the child's nasal passages and upper respiratory tract.\n\nThese cells (known as mast cells) contain strong chemicals called mediators, the best-known of which is histamine.\n\nLater, when the child inhales the same kind of pollen again, proteins from the pollen bind in a lock-and-key fashion to the specially designed antibodies on the surface of the mast cells. This sets off an explosion of sorts, as the mediators burst from inside the mast cells, destroying the pollen and also damaging surrounding tissues. The results are sneezing, a stuffy head, sniffling, stuffed-up head and red, watery eyes - well-known hallmarks of allergies.
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Part of the cell mediated antigen-antibody defense system.
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These are molecules produced by a large number of different cells, including immune and neuronal cells-they are most associated with the immune system
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Interesting theory.  There are some similar theories around diseases like asthma.  Basically, by challenging your immune system, you make it stronger, a la Nietzsche "What does not kill me, makes me stronger."  \nI don't know the answer to your question, but I wouldn't be surprise if they did.
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Well all foreign objects entering into body are considered as enemies by immune system....the foreign particle entering in body is called as antigen, when immune system is triggered and produces specific antibodies again that particular antigen.\n\nHope this helps!!!