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प्रश्न
How does the human body respond when vaccine is introduced into it?
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उत्तर
In vaccination, a preparation of antigenic proteins of pathogen or inactivated / or weekened pathogen (vaccine) are introduced into the body. The antibodies produced in the body against these antigens would neutralise the pathogenic agents during actual infection. The vaccines also generate memory – B and T-cells that recognise the pathogen quickly on subsequent exposure and overwhelm the invaders with a massive production of antibodies.
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संबंधित प्रश्न
Name any two types of cells that act as ‘cellular barriers’ to provide innate immunity in humans.
Name the cells that are released from the above-mentioned gland. Mention how they help in immunity.
It is said that vaccinations are a must for a healthy society. Justify.
Answer the following question:
The principle of vaccination is based on the property of the "memory" of the immune system. Taking one suitable example, justify the statement.
Both B-cells and T-cells are derived from __________.
Which cells stimulate B-cells to form antibodies?
What are congenital diseases?
Which cells are play a major role in non-specific defence against viral infections and tumors?
On coming in contact with an antigen, a sensitized T-lymphocyte produces ____________.
Production of which of the following is stimulated by secretin hormone?
