| Retroviruses | Lentiviruses | Adenoviruses | Adeno-associated viruses |
Viral genome | RNA | RNA | DNA | DNA |
Target cells | Dividing cells | Dividing and nondividing cells | Dividing and nondividing cells | Dividing and nondividing cells |
Integration in the host genome | Yes | Yes | No | Yes |
Response | Long-term | Long-term | Short-term | Long-term |
Size of the genetic material to be carried | 8 kb | 8 kb | 7.5 - 30 kb | 4.5 kb |