TABLE 1.
Comparison of the expression of CMV IE, E, and L proteins in MRC-5 cells and 6- and 14-day-old Caco-2 cells
| Day(s) of incubation | Reactivity (% of positive cells)a
|
||||||||
|---|---|---|---|---|---|---|---|---|---|
| IE protein
|
E protein
|
L protein
|
|||||||
| MRC-5 | 6-day-old Caco-2 | 14-day-old Caco-2 | MRC-5 | 6-day-old Caco-2 | 14-day-old Caco-2 | MRC-5 | 6-day-old Caco-2 | 14-day-old Caco-2 | |
| 1 | ++ (>90) | + (25) | + (19) | − (0) | − (0) | − (0) | − (0) | − (0) | − (0) |
| 2 | ++ (>90) | ++ (34) | ++ (30) | + (50) | + (<1) | + (<1) | + (50) | +/− (<1) | − (0) |
| 3 | ++ (100) | ++ (33) | ++ (34) | ++ (>90) | + (5) | + (5) | ++ (70) | + (1) | + (1) |
| 4 | ++ (100) | ++ (35) | ++ (42) | ++ (100) | ++ (5) | ++ (5) | ++ (100) | ++ (5) | ++ (2) |
a
+, positive; ++, positive with increased intensity; −, negative; +/−, weakly positive.