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Vaccination:
Now let us see how vaccination protects us from disease. We have mentioned above that the W.B.Cs. produce antibodies which neutralise the toxins produced by the invaders. These W.B.Cs. are of different kinds and each kind consists of millions of cells which recognise and combat a specific foreign invader. Once a class of W.B.Cs. has encountered a particular kind of invader, it develops memory and is thus trained to ward off future attacks. In this way the body becomes "immune" to that infection and the process is called immunisation. Thus, our body regularly develops natural immunity as a variety of fighting cells are produced by actual attacks of infectious agents. Artificial immunisation is a clever idea. It is done through "vaccination", that is by artificial introduction into the body of a weak infection, which triggers off a defence mechanism, and produces W.B.C. trained to combat that particular infection.
Media and Educational Environment: Some recent technological developments in media, have opened up new horizons. Besides, increasing use of media, to support and expand educa
factors affecting nitrogen balance
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Explain the Igneous rocks form? Igneous rocks form from the crystallization of magma. There are two main kinds of igneous rocks: intrusive and extrusive Molten rock within t
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Explain Immunohistochemistry Here the Ag is tagged with a fluorescent dye (e.g. rhodamine). Inspite of a tag, the Ab binds to the Ag. In the section of a tissue, the Ag with ta
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Explain the Maintenance of Electrolyte Balance In the process of formation of urine, the kidneys also maintain electrolyte balance. Sodium is the most important cation that exi
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how are the earth''s layers formed?
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