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

Matter, what is meaning of solid'' liguid'' gases?why eresers float in wate...

what is meaning of solid'' liguid'' gases?why eresers float in water?why deos paper sink in water?

Explain the adrenal medulla, Explain the Adrenal Medulla The adrenal me...

Explain the Adrenal Medulla The adrenal medulla secretes epinephrine or adrenaline and norepinephrine or noradrenaline. The secretory cells of the medulla are modified postgang

Explain the composition of pancreatic juice, Explain the Composition of pan...

Explain the Composition of pancreatic juice Pancreatic juice is the secretion of the exocrine part of the pancreas.  It is alkaline in reaction.  Its pH is 8.0 - 8.3. It consis

What is transamination reaction, What is Transamination Reaction ? Mos...

What is Transamination Reaction ? Most common amino acids can be converted into the corresponding keto acid by 'transamination. In this reaction, there is a transfer of a-amin

#title. .nasal, why does the nose on some people turn cold and color purple...

why does the nose on some people turn cold and color purple

Treatment of the spillage site after removal, Treatment of the spillage sit...

Treatment of the spillage site after removal of the bulk of the waste In order to remove the final traces of the spillage, any one of the following methods may be used dependin

The earths iterior, Ask question how many years that our earth survived?#Mi...

Ask question how many years that our earth survived?#Minimum 100 words accepted#

Experiment of a balance barometer, A balance barometer This device depe...

A balance barometer This device depends on the fact that dry air is heavier than moist air at the similar temperature. Two equal cylinders (tin cans would do) are mounted, o

Explain the apnoea - histotoxic hypoxia, Explain the Apnoea Apnoea mean...

Explain the Apnoea Apnoea means cessation of breathing. Temporary apnoea may be seen in low carbon dioxide tension in blood. During swallowing, there is a temporary apnoea.

In how many groups proteins may be classified, Proteins  may  be  classi...

Proteins  may  be  classified  broadly  into three  groups: a) Simple proteins, b) Conjugated proteins, and c) Derived proteins.

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