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

Zoology, characters of chordates

characters of chordates

Twenty point programme and communication, The Twenty Point Programme and Co...

The Twenty Point Programme and Communication : In view of what we have discussed above, it may be useful to have a look at the Twenty Point Programme  (1986), which the Governme

Gases -hazard identification, Gases : Critical temperature is the A substa...

Gases : Critical temperature is the A substance which has a critical temperature below 50°C, has a vapour temperature above which pressure of more than 3 bars absolute (highly

Immune mechanisms - physiology of growth and development, Explain the Immun...

Explain the Immune mechanisms - Physiology of Growth and Development The immune system starts functioning in a baby through the inherited antibody (Ab) of the mother. But these

Student, how increases in atmospheric concentrations of carbon dioxide and ...

how increases in atmospheric concentrations of carbon dioxide and other greenhouse gases cause global warming.

Chromatin, What is the job of chromatin in an animal cell?

What is the job of chromatin in an animal cell?

Distance, how far does a horse go when running

how far does a horse go when running

Peripheral nervous system (pns), Peripheral nervous system (pns): Excep...

Peripheral nervous system (pns): Except for the  brain and the spinal cord,  the  rest of  the network  of  nerves and neurons is included in tha  peripheral nervous system, or

Explain myocardium, Explain Myocardium Myocardium :- The middle layer...

Explain Myocardium Myocardium :- The middle layer of the heart wall.

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