Ringworm is not caused by:
| 1. | Trichoderma | 2. | Microsporum |
| 3. | Trichophyton | 4. | Epidermophyton |
Where do the T-lymphocytes develop the ability to recognize self from non-self antigens?
| 1. | plasma cells | 2. | spleen |
| 3. | thymus | 4. | liver |
Which of the following is not a function of spleen?
| 1. | It acts as a filter of the blood by trapping blood-borne microorganisms |
| 2. | It acts as a large reservoir of RBCs |
| 3. | It filters our old RBCs |
| 4. | It continues to form RBCs for a few years after birth |