Table 2.
Formation of CPE in MDCK cells pre-treated with pure compounds and chemical portions of Banlangen (Radix Isatidis) extract
| Initial concentration (μg/mL) | Dilutions |
||||
|---|---|---|---|---|---|
| 1: 2 | 1:4 | 1:8 | 1:16 | ||
| CB | 50 | – | – | – | − |
| Epigoitrin | 50 | – | – | – | – |
| PEP portion | 1 | − | − | − | − |
| PEP+ALK+OA | 1 | − | − | − | − |
| Ribavirin | 100 | − | − | − | − |
| Cell control | 0 | − | − | − | − |
| Virus Control | 0 | +++ | +++ | +++ | +++ |
Notes: the CPE was graded as follows: “-” = 0% CPE; “+” = 0%-25% CPE; “++” = 26%-50% CPE; “+++” = 51%-75% CPE; “++++” = 76%-100%. Cell control: Normal cells without virus infection and drug treatments. Virus control: Cells infected with influenza virus (FM1).