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. |
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. |
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 |
Use of anti-histamine and steroids give a quick relief from:
1. | allergy | 2. | nausea |
3. | cough | 4. | headache |
During injury, mast cells secrete:
1. Histamine
2. Heparin
3. Prothrombin
4. Antibodies
Histamine is secreted by:
1. | Mast cells | 2. | Fibroblast |
3. | Histiocytes | 4. | Plasma cells |