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

To study the relation between volume and pressure of air, To study the rela...

To study the relation between volume and pressure of air Get  a rubber bung or 'door stop' which just fits in a narrow glass jar or measuring cylinder. Attach it  to  the  lowe

Define the pre motor areas of the cerebrum, Define the Pre Motor Areas of t...

Define the Pre Motor Areas of the Cerebrum The pre motor areas too lie in the frontal lobe immediately anterior to the motor area as highlighted in the Figure. The cells are th

Explain the nerve roots, Explain the Nerve Roots Each nerve is attached...

Explain the Nerve Roots Each nerve is attached to the medulla spinalis by two roots, an anterior or ventral, and a posterior or dorsal. The anterior nerve root consists of moto

Situation of the unit, A) What strategies would you offer to the nurse mana...

A) What strategies would you offer to the nurse manager to improve the situation of the unit? B) What leadership style would produce the most favorable result? describe

Expanding universe, The Expanding Universe: Hubble's observations had...

The Expanding Universe: Hubble's observations had proved  the existence of  galaxies. After mapping as many galaxies as could be seen by  the telescopes then'available, he tu

Earthquake, 1. city destroyed by earthquake in 1923? 2.the place where two ...

1. city destroyed by earthquake in 1923? 2.the place where two plates collide and one goes over top the other? 3.sudden stress changes in the earth that cause ground shaking.They o

A simple balance of pulley, A simple balance Suspend a ruler by loops o...

A simple balance Suspend a ruler by loops of cord a short distance above a table top, as shown in the diagram. When the ruler is in balance, place identical coins in dissimilar

What did you learn about yourself, Question: what did you learn about yours...

Question: what did you learn about yourself from reading the other theories of personality?list and explain at least three things.) There is no doubt that it was very knowledgeabl

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