Histamine is secreted by:

1. Mast cells 2. Fibroblast
3. Histiocytes 4. Plasma cells

Subtopic:  Allergies & Autoimmunity |
 95%
Level 1: 80%+
AIPMT - 1998
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During injury, mast cells secrete:
1.  Histamine
2.  Heparin
3.  Prothrombin
4.  Antibodies

Subtopic:  Allergies & Autoimmunity |
 77%
Level 2: 60%+
AIPMT - 1999
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Mast cells of connective tissue contain:

1. Heparin and histamine

2. Heparin and calcitonin

3. Serotonin and melanin

4. Vasopressin and relaxin

Subtopic:  Allergies & Autoimmunity |
 93%
Level 1: 80%+
AIPMT - 2004
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Use of anti-histamine and steroids give a quick relief from:

1. allergy 2. nausea
3. cough 4. headache
Subtopic:  Allergies & Autoimmunity |
 95%
Level 1: 80%+
AIPMT - 2009
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Which of the following are the reason(s) for rheumatoid arthritis? Choose the correct option.

I. Lymphocytes become more active
II. Body attacks self cells
III. More antibodies are produced in the body
IV. The ability to differentiate pathogens or foreign molecules from self-cells is lost


1. I and II
2. II and IV
3. III and IV
4. I and III

Subtopic:  Allergies & Autoimmunity |
 88%
Level 1: 80%+
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Given below are two statements:
Statement I: Autoimmune disorder is a condition where body defense mechanism recognized its own cells as foreign bodies
Statement II: Rheumatoid arthritis is a condition where body does not attack self cells

In the light of the above statements, choose the most appropriate answer from the options given below:
1. Statement I is incorrect but Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct but Statement II is incorrect.
Subtopic:  Allergies & Autoimmunity |
 82%
Level 1: 80%+
NEET - 2022
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In higher vertebrates, the immune system can distinguish between self-cells and non-self. If this property is lost due to genetic abnormality and it attacks self–cells, then it leads to:
1. graft rejection
2. auto-immune disease
3. active immunity
4. allergic response
Subtopic:  Allergies & Autoimmunity |
 89%
Level 1: 80%+
NEET - 2016
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Given below are two statements: 
Statement I: Bone marrow is the main lymphoid organ where all blood cells, including lymphocytes, are produced.
Statement II: Both bone marrow and thymus provide micro environments for the development and maturation of T-lymphocytes.
In the light of the above statements, choose the most appropriate answer from the options given below: 
1. Both Statement I and Statement II are incorrect.
2. Statement I is correct but Statement II is incorrect.
3. Statement I is incorrect but Statement II is correct.
4. Both Statement I and Statement II are correct.
Subtopic:  Allergies & Autoimmunity |
 75%
Level 2: 60%+
NEET - 2024
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