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प्रश्न
Write a note on ‘artificial acquired active immunity’.
उत्तर
Artificially acquired active immunity:
It is acquired artificially by vaccination.
Vaccines contain dead or live but attenuated pathogens or toxoids.
These consist of microbial components or toxins secreted by the pathogens.
The vaccine is introduced into the body to stimulate the production of antibodies by the immune system.
Examples: Polio vaccine, BCG vaccine
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संबंधित प्रश्न
A heavily bleeding and bruised road accident victim was brought to a nursing home. The doctor immediately gave him an injection to protect him against a deadly disease.
(a) Write what did the doctor inject into the patient’s body.
(b) How do you think this injection would protect the patient against the disease?
(c) Name the disease against which this injection was given and the kind of immunity it provides.
Explain the relationship between B-lymphocytes and T-lymphocytes developing an immune response.
Answer the following question.
Differentiate between the roles of B-lymphocytes and T-lymphocytes in generating immune responses.
Both B-cells and T-cells are derived from __________.
Define ‘Health’, as given by WHO.
Enlist the four types of T- lymphocytes, responsible for immune response of our body.
A similar disease generally does not reappear in a child due to the presence of which type of cells?
Which type of immunity is acquired due to infection?
Coating of bacteria to facilitate subsequent phagocytosis by macrophages is known as ____________.
Which cells deliver co-stimulatory signals for helper T-cells?
