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प्रश्न
What are interferons? Mention their role.
उत्तर
Interferons are the antiviral proteins which induce antiviral state in the infected cells.
APPEARS IN
संबंधित प्रश्न
Differentiate between Innate and acquired immunity.
Draw a well-labelled diagram of an antibody molecule.
Which of the following is a type of vaccine which generates artificially acquired passive immunity?
Fever plays a major role in innate immunity by
Which type of immunity is developed in a person who has recovered from measles?
Which of the following are characters of acquired immunity?
Which type of immunity is provided by colostrum?
The type of immunity developed in response to vaccination is ______.
Which blood cells secrete antibodies?
Transplantation of tissues/organs fails after due to non-acceptance by the patient's body which type of immune response is responsible for such rejections?
Antibodies in our body are complex:
Differentiate between active immunity and passive immunity.
For an organ transplant, it is an advantage to have an identical twin. Why?
Cellular factors in innate immunity is provided by ______.
| When a microorganism invades a host, a definite sequence of events usually occurs leading to infection and disease, causing suffering to the host. This process is called pathogenesis. Once a microorganism overcomes the defence system of the host, development of the disease follows a certain sequence of events as shown in the graph. Study the graph given below for the sequence of events leading to the appearance of a disease and answer the questions that follow: |
(a) In which period, according to the graph there are maximum chances of a person transmitting a disease/infection and why? (1)
(b) Study the graph and write what is an incubation period. Name a sexually transmitted disease that can be easily transmitted during this period. Name the specific type of lymphocytes that are attacked by the pathogen of this disease. (2)
OR
(b) Draw a schematic labelled diagram of an antibody. (2)
(c) In which period, the number of immune cells forming antibodies will be the highest in a person suffering from pneumonia? Name the immune cells that produce antibodies. (1)
Give one difference between the following pair:
Sites of maturation of B-lymphocytes and T-lymphocytes
A patient was given an anti-retroviral drug by the doctor.
Mention any one symptom of HIV disease.
A patient was given an anti-retroviral drug by the doctor.
What is the role of Reverse Transcriptase and Integrase in the life cycle of a retrovirus?
The following is well-known abbreviation, which have been used in this chapter. Expand to its full form:
CMI
