| 1. | Eosinophils | 2. | TH cells |
| 3. | B-lymphocytes | 4. | Basophils |
Which of the following is correct regarding AIDS causative agent HIV?
| 1. | HIV is an enveloped virus containing one molecule of single-stranded RNA and one molecule of reverse transcriptase |
| 2. | HIV is an enveloped virus that contains two identical molecules of single-stranded RNA and two molecules of reverse transcriptase |
| 3. | HIV is an unenveloped retrovirus |
| 4. | HIV does not escape but attacks the acquired immune response |