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प्रश्न
''Abnormally, large numbers of WBCs in the blood are usually an indication of some infection in our body''. Comment on the statement.
उत्तर
Whenever a germ or infection invades the body, a signal is sent to the immune system to produce specific antibodies. To cope with the number of germs being multiplied inside the body, white blood cells start multiplying rapidly. This enables them to produce a number of antibodies and stop the infection in time. So, abnormally large numbers of WBCs in the blood are usually an indication of some infection in our body.
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संबंधित प्रश्न
Highlight the role of thymus as a lymphoid organ.
Expand the following: SCID
Write the full forms of: ATS
Give one significant difference between primary lymphoid organs and secondary lymphoid organs. Give one example of each.
Mention one application of the following:
Passive immunization
What are congenital diseases?
Enlist any two features of Acquired immunity.
Which cells are play a major role in non-specific defence against viral infections and tumors?
Which type of immunity is acquired due to infection?
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 |
