The PRN test is very specific and can be used to differentiate between EEE and WEE virus infections. The PRN test is performed in duck embryo fibroblast, Vero, or BHK-21 cell cultures. Endpoints are based on a 90% reduction in the number of plaques compared with the virus control flasks. | The PRN test is very specific and can be used to differentiate between EEE and WEE virus infections. The PRN test is performed in duck embryo fibroblast, Vero, or BHK-21 cell cultures. Endpoints are based on a 90% reduction in the number of plaques compared with the virus control flasks. |