TABLE 1.
MLV (Tva) infection of target cells expressing RSV Env
| Target cell | Titer (IU/ml)a for:
|
|
|---|---|---|
| 293% cells | QT6 cells | |
| Chronically infectedb | ||
| Uninfected | 0 | |
| RSV-A infected | 700 | |
| Transfectedc | ||
| EnvA | 20,000 | 1,800 |
| EnvC | 0 | 0 |
| EnvA cleavage(−) | 18 | 0 |
| EnvA GPI | 0 | 0 |
| EnvA A34[A]Q35 | 22 | 3 |
| Mock | 0 | 0 |
a
Titers were determined by enumerating β-Gal-positive cells. The data shown are representative of multiple experiments.
b
QT6 cells were chronically infected with an RSV-A vector, RCAS (A) AP (18).
c
Transfections are described in Materials and Methods.