Volume 13, Number 3—March 2007
Research
In Vitro Cell Culture Infectivity Assay for Human Noroviruses
Table 3
Relative increases in viral RNA as measured by limiting dilution PCR*
| Effective dilution of working viral stock applied to cells | Hours postinfection | |||
|---|---|---|---|---|
| 1 | 24 | 66 | 72 | |
| 1:10 | + | + | + | ND |
| 1:100 | + | + | + | ND |
| 1:1,000 | - | - | + | + |
| Negative control | - | - | - | - |
*ND, not done.


