TABLE 1.
Mo-MuLVΔ28 is as efficient a helper virus as Mo-MuLV
| Expt and virus | Luciferase activity (106 relative light units/μg of total protein)
|
Normalized infectivitya | |
|---|---|---|---|
| Transfected cells | Infected cells | ||
| 1 | |||
| Mo-MuLV | 214 | 31 (1:2)b | 0.14 |
| 11 (1:10) | 0.05 | ||
| Mo-MuLVΔ28 | 231 | 42 (1:2) | 0.18 |
| 12 (1:10) | 0.05 | ||
| 2 | |||
| Mo-MuLV | 129 | 27 (1:2) | 0.21 |
| 13 (1:10) | 0.10 | ||
| Mo-MuLVΔ28 | 159 | 32 (1:2) | 0.20 |
| 8 (1:10) | 0.05 | ||
a
Specific luciferase activity in infected cells divided by specific luciferase activity in transfected cells.
b
Dilution factor of the supernatants used for infection.