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

Diseases spread by insects or other carriers, Diseases Spread by Insects or...

Diseases Spread by Insects or Other Carriers: We know malaria is transmitted by  the female Anopheles mosquitoes. Dengue fever and filaria are also caused by mosquito's bite. T

Observing sun spots, Observing sun spots Use the telescope that you mad...

Observing sun spots Use the telescope that you made in a last experiment. Set it up so that it points directly at the sun and focus it so that a clear and bright image of the s

Perceptual reasoning index, Mr. X was administered the Wechsler Adult Intel...

Mr. X was administered the Wechsler Adult Intelligence Scale-Fourth Edition (WAIS-IV), which is an individually administered test of a person's intellectual ability and cognitive s

Explain precipitation - antigen-antibody interaction, Explain Precipitation...

Explain Precipitation - Antigen-Antibody Interaction If Ag-Ab are present in an appropriate ratio, they form a precipitate in blood. Turbidity is developed, this can be measure

Zoology, I need help with a few homework questions...We had a substitute, a...

I need help with a few homework questions...We had a substitute, and I didn''t get the chance to finish reading the chapter.

Procedure of proper fuse rating and plug type, Procedure: Take any applian...

Procedure: Take any appliance1 equipment in the laboratory e-g., the oven, electric heater, sodium lamp, immersion rod, the vacuum pump, autoclave, heating mantle, refrigerator, i

Science, Structure of the brain. Include different parts and their function...

Structure of the brain. Include different parts and their function.

Heart massage for restoring circulation, Heart Massage for Restoring Circul...

Heart Massage for Restoring Circulation : In cases of breathing failure, you should check that the casualty's heart is still beating. This is especially important with victims of

Radiation, Radiation: High doses of radiation are very harmful for huma...

Radiation: High doses of radiation are very harmful for human health. Do you know about the disaster ceated by  the first atomic bombs which were exploded on two cities of Japa

Health, illness expenditure on health

illness expenditure on health

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