
| Epidemic | |
| Opportunistic diseases | |
| Antibodies | |
| Viracept | |
| Immune system | |
| virus |
Quiz
1. true
2. false
3. true
4. AIDS
5. true
6. false
7. true
8. 95%
Ratings
number right: rating
6-8: You know your facts!
3-5: You're not too bad.
0-2: What were you thinking?
