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 |
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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 |
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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 |
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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 |
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During injury, mast cells secrete:
1.  Histamine
2.  Heparin
3.  Prothrombin
4.  Antibodies

Subtopic:  Allergies & Autoimmunity |
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Histamine is secreted by:

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

Subtopic:  Allergies & Autoimmunity |
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