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

Geography, carefully analyed the device sources of documentory data for geo...

carefully analyed the device sources of documentory data for geographic research

Histroy of science, describe the factors which decide the broad area of sci...

describe the factors which decide the broad area of scientific activity?

Explain pus formation, Explain Pus Formation Once a neutrophil finds a ...

Explain Pus Formation Once a neutrophil finds a foreign particle or a bacterium, it will engulf it releasing enzymes, hydrogen peroxide and other chemicals from its granules to

Water cyclw, why the sun important for the water cycle

why the sun important for the water cycle

Define universal donor and recipients, Define Universal Donor and Recipient...

Define Universal Donor and Recipients Based on the above mentioned concept, O group individuals are sometimes considered as 'universal donors ', since they have no antigens an

Jupiter, Jupiter Jupiter is the largest planet of  the Solar System. ...

Jupiter Jupiter is the largest planet of  the Solar System. If  Earth were placed on the face of Jupiter, it would look like a 50 paise coin on a dinner plate.  It weighs mor

#titlefactors which decide the broad area of scientic acti.., factors which...

factors which decide the broad area of scientic activity

Making a ''gusher'' with compressed air, Making a 'gusher' with compressed ...

Making a 'gusher' with compressed air Secure a large narrow-necked bottle like as is used for soda water. Place a single-hole stopper in the bottle. By the stopper put a 10- cm

Define solute-solvent interaction, Define Solute-Solvent Interaction A ...

Define Solute-Solvent Interaction A solution, as you may already know, is a mixture of solute (present in small amount) and solvent (present in large amount). The interaction b

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