Vaccination, Science

Assignment Help:

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.  


Related Discussions:- Vaccination

Pollution, Pollution Now-a-days, you might have heard every one talking...

Pollution Now-a-days, you might have heard every one talking about pollution. What does pollution mean? Pollution is the addition to the environment (air, water, soil) of subst

To show which types of soil hold water best, To show which types of soil ho...

To show which types of soil hold water best Tie cloth over the end of various lamp chimneys and then fill every one to within 8 cm of the top with dissimilar types of soil. Use

Arthropoda, structure and function of respiratory organs in arthropoda with...

structure and function of respiratory organs in arthropoda with diagram

Biology, explain the process of respiration in human beings

explain the process of respiration in human beings

Broad area of science, Decribe the factors which decide the broad area of s...

Decribe the factors which decide the broad area of scientific activity

Nitrogen-fixing bacteria on the roots of legumes, To show the presence of n...

To show the presence of nodules of nitrogen-fixing bacteria on the roots of legumes Carefully spade up some leguminous plant like as clover, alfalfa, soy-beans, cow peas, etc.

Explain asphyxia - histotoxic hypoxia, Explain Asphyxia - Histotoxic Hypoxi...

Explain Asphyxia - Histotoxic Hypoxia Improper aeration of blood produces a series of pathological manifestation and ultimately death. The symptoms are collectively called asph

Define the categories of autonomic nervous system, Define the Categories of...

Define the Categories of Autonomic Nervous System Autonomic nervous system is divided into 2 parts - sympathetic and parasympathetic. Sympathetic is a thoracolumbar outflow, para

Homo habilis, Homo Habilis-The  First Tool Makers: One of  the most imp...

Homo Habilis-The  First Tool Makers: One of  the most important developments in human evolution was  the dramatic expansion  in  brain size which, according  to the fossil data

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd