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

Explain fehling''s test, In Fehling's Test The free sugar group (aldehy...

In Fehling's Test The free sugar group (aldehyde or ketone) reduces the Cu  (cupric) ions in  an alkaline environment  to form Cu 10 (cuprous oxide) and the sugar is itself ox

Define the gene activation - mechanism of hormone action, Define the Gene A...

Define the Gene Activation - Mechanism of Hormone Action A second important way by which the hormone affects cell function is gene activation. This is the mechanism of hormonal

OCEAN COASTLINE, WHAT IS THE OCEAN''S COASTLINE''S LIVING AND NON-LIVING TH...

WHAT IS THE OCEAN''S COASTLINE''S LIVING AND NON-LIVING THINGS?

Explain riboflavin (vitamin b2), Riboflavin (vitamin B2) Riboflavin was...

Riboflavin (vitamin B2) Riboflavin was isolated in  a crystalline form from milk by Kuhn  and co-workers in 1933.  Because of this,  the  early  name  of  the  vitamin  was  la

Nuclear fission, Nuclear Fission: Splitting the Atom  You know  that ...

Nuclear Fission: Splitting the Atom  You know  that atoms are made up of a nucleus and electrons moving around the nucleus, and the nucleus  is made up of protons and neutron

Determine the number of photons incident on water phantom, a. A 2 mm diamet...

a. A 2 mm diameter parallel beam of photons each with energy of 100 keV is incident on a water phantom of thickness 15 cm. If the exit exposure is 2 mR (caused by primary photons),

Controlling air pollution, Controlling Air Pollution: Now  let us  se...

Controlling Air Pollution: Now  let us  see, how air pollution can be controlled.  i)  Photochemical smog-eliminating  this would require large scale changes in life style

Research critique VTE, Due Date: May 15, 2016 23:59:59 Max Points: 15...

Due Date: May 15, 2016 23:59:59 Max Points: 150 Details: Prepare a critical analysis of a qualitative study focusing on the problem statement, study purpose, research questi

Explain the glomerular filtration rate (gfr), Explain the Glomerular Filtra...

Explain the Glomerular Filtration Rate (GFR) The kidneys receive a large amount of blood flow. The kidney blood flow is approximately 1200 ml per minute. One-tenth of this is f

Geocentric universe of the ancients, Geocentric Universe of  the Ancients:...

Geocentric Universe of  the Ancients: The  earliest ideas of  the Egyptians and Sumerians about the universe may seem strangeto us. The Earth appeared flat 2nd solid tg them.

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