Which of the following is not an auto-immune disorder in humans?
1. | Rheumatoid arthritis | 2. | Myasthenia gravis |
3. | Emphysema | 4. | Graves’ disease |
1. | Bone marrow & Spleen | 2. | Bone marrow & Thyroid |
3. | Lymph nosed & Spleen | 4. | Bone marrow & thymus |
What constitutes about 50% of the lymphoid tissue in the human body?
1. | Malt | 2. | Spleen |
3. | Lymph nodes | 4. | Liver |