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प्रश्न
The principle of vaccination is to produce immunity against a disease. Explain.
उत्तर
Vaccination is the practice of artificially introducing germs or the germ substance into the body for developing resistance to particular diseases.
- Scientifically, this practice is called prophylaxis and the material introduced into the body is called the vaccine.
- The vaccine or germ substance is introduced into the body usually by injection and sometimes orally (e.g. polio drops).
- Inside the body, the vaccine stimulates lymphocytes to produce antibodies against the germs for that particular disease.
- Antibodies are an integral part of our immunity. Their function is to destroy the unwanted particles which enter the body.
- Vaccines give our immunity a signal to produce specific antibodies. Hence, the principle of vaccination is to produce immunity against a disease.
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संबंधित प्रश्न
Mention the contributions of
Edward Jenner
Name three commonly used vaccines.
Given below are the groups of certain substances of particular categories. Mention the category of group and identify the wrong example giving reason.
BCG, DTP, ATP
Given below are the groups of certain substances of particular categories. Mention the category of each group and identify the wrong example giving reason.
Tears, skin, nasal secretion, HCl (in stomach)
Intestinal diseases spread through air.
Expand the following.
DPT-
Expand the following.
WHO-
Injecting a person with globulins against a disease like hepatitis confers ______.
The typhoid vaccine which is administered orally is ______
In human beings, antibodies are used to cure infectious diseases like cholera, typhoid, etc.
