How does RNAi defend against viruses?

Related questions

1. What is the difference between knockout and knockdown?
2. What is RNAi screening?
3. What is RNA therapy?
4. Why is mRNA single stranded?
5. Is RNAi a gene therapy?
6. What is the possible source of RNA interference gene?
7. Why is RNAi important?
8. What does knockout mean in genetics?
9. How can RNAi be used to fight viral infections?
10. Does RNAi occur naturally?

Tags

1. #manipulate
2. #micrornas
3. #evolved
4. #other
5. #viral
6. #sequences
7. #against
8. #encode
9. #target
10. #viruses
11. #response
12. #degrading
13. #adaptations
14. #suppress
15. #myriad
16. #evade
17. #protects
18. #expression
19. #hosts