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प्रश्न
Discuss with your teacher what does ‘a suitable gene’ means, in the context of DNA vaccines.
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उत्तर
A DNA vaccine consists of a gene encoding an antigenic protein, which is then inserted into a plasmid and introduced into the cells of a target animal. The plasmid vaccine, which contains the DNA (gene), enters the nucleus of target cells and is transcribed into RNA, which then produces the specific antigenic protein because these proteins are detected as foreign. When they are digested by host cells and presented on their surfaces, the immune system is alerted, triggering a variety of immune responses.
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संबंधित प्रश्न
Write a note on ‘artificial acquired active immunity’.
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.
- Write what did the doctor inject into the patient’s body.
- How do you think this injection would protect the patient against the disease?
- Name the disease against which this injection was given and the kind of immunity it provides.
Summarise the process of vaccine production
Describe the antigen-antibody complex
Suggest a method to ensure an anamnestic response in humans.
Draw Diagram of the causative organism of typhoid (Salmonella typhi)
Explain the relationship between B-lymphocytes and T-lymphocytes developing an immune response.
It is said that vaccinations are a must for a healthy society. Justify.
How does the human body respond when vaccine is introduced into it?
''Abnormally, large numbers of WBCs in the blood are usually an indication of some infection in our body''. Comment on the statement.
Name the following:
The vaccine that helps to produce immunity against polio.
Write the full forms of: WHO
Write the full forms of: TAB
Give the technical term for the kind of proteins produced in the blood to fight and destroy harmful micr
State the role of the thymus as a lymphoid organ. Name the cells that are released from it and mention their function.
Mention one application of the following:
Passive immunization
Both B-cells and T-cells are derived from __________.
Define health.
What do the abbreviations AIIMS denote?
Define ‘Health’, as given by WHO.
Explain the various types of acquired immunity.
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 ____________.
The epithelial barrier of the innate immune system is ____________.
______ is secreted by killer T - cells.
What is the site of maturation of B-lymphocytes?
Any foreign substance invading body and capable of stimulating an immune response is ____________.
Write a short note on Acute Phase Proteins (APPs).
