Advertisements
Advertisements
प्रश्न
Discuss with your teacher what does ‘a suitable gene’ means, in the context of DNA vaccines.
Advertisements
उत्तर
A DNA vaccine consists of a suitable gene that encodes an antigenic protein, which is subsequently placed into a plasmid and integrated into the cells of a target animal. The plasmid vaccine, which contains the DNA (gene), enters the nucleus of target cells and creates RNA, which then produces the specific antigenic protein because these proteins are detected as foreign. When they are digested by host cells and exhibited on their surfaces, the immune system is notified, resulting in a variety of immune-related reactions.
APPEARS IN
संबंधित प्रश्न
Highlight the role of thymus as a lymphoid organ.
What are interferons?
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 category of immunity required in the treatment of snake-bite.
Write the full forms of: HIV
Write the full forms of: TAB
Give one significant difference between primary lymphoid organs and secondary lymphoid organs. Give one example of each.
Answer the following question.
Differentiate between the roles of B-lymphocytes and T-lymphocytes in generating immune responses.
State the functions of mast cells in allergy response.
Mention one application of the following:
Passive immunization
Mention one application of the following:
Antihistamine
Which cells stimulate B-cells to form antibodies?
What are congenital diseases?
Enlist any four barriers that contribute to innate immunity.
____________ is a foreign substance capable of stimulating an immune response.
T-lymphocytes and B-lymphocytes are derived from ____________.
____________ are previously sensitized cells which retain the sensitization memory for a long time in the future.
Toxins released by bacteria like tetanus toxin undergo______.
Which type of T-cells are responsible for producing lymphokines and stimulation of B- cells?
Which type of immunity is acquired by antigenic stimulus?
Which cells deliver co-stimulatory signals for helper T-cells?
Match column I with column II and choose the correct option.
| Column I | Column II | ||
| i. | Specificity | a. | Lymphocytes produced against each particular foreign molecule |
| ii. | Diversity | b. | Self-cells are not attacked by immune system of the own body |
| iii. | Memory | c. | Immune system works against multiple pathogens |
| iv. | Discrimination between self and non-self | d. | Stronger immune response on second encounter |
Production of which of the following is stimulated by secretin hormone?
Innate immunity is ______
Which of the following components does not participate in innate immunity?
Class of cytokines released by cells infected with viruses and certain WBC's to protect from viral infection are ______.
