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

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

Precautions in nonionising radiations, Precautions : The following precaut...

Precautions : The following precautions should be taken while using UV lamps: 1) TJV lamps must always be properly shielded. 2)Wear approved goggles when working with or clo

Science, hi can you help me on my science

hi can you help me on my science

For miscible solid and liquid wastes-chemical wastes, For water soluble/mis...

For water soluble/miscible solid and liquid wastes The familiar method of mopping the waste with plenty of water and running the same into the drainage could be done for miscib

Define ligases, Ligases (synthetases) These enzymes (code EC 6) catal...

Ligases (synthetases) These enzymes (code EC 6) catalyze the linkage of two molecules coupled with the hydrolytic breakdown of a pyrophosphate bond  in ATP or an analogous co

Absorption of proteins, Absorption of Proteins Proteolytic enzymes brea...

Absorption of Proteins Proteolytic enzymes break  the dietary  Proteins and proteins  into amino acids or di-  and  tripeptides.  In  fact,  it  is  in  this  form  that the di

Explain the mechanism of phagocytosis, Explain the Mechanism of Phagocytosi...

Explain the Mechanism of Phagocytosis In phagocytosis, the organism is entrapped into vacuoles known as "Phagosome". The cytoplasmic granules, organelles or lysosomes fuse with

Use of fire extinguishers , Use of Fire Extinguishers : We know that one t...

Use of Fire Extinguishers : We know that one type of fire extinguisher cannot serve the purpose on all kinds of fire. In this subsection you will study about the use of different

Explain the factors controlling movements of gall bladder, Explain the Fact...

Explain the Factors Controlling Movements of Gall Bladder Contraction of gall bladder can be controlled by reflex action, by the presence of foodstuff in the duodenum and by th

Zirconium, What reacts with zirconium/

What reacts with zirconium/

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