| abstract |
The present invention provides a method for purifying a virus or virus antigen comprising the steps of providing a virus product and centrifuging the virus product with a gradient of sugar established by adding two or more buffering sugar layers at different concentrations . The method increases the volume of the peak pool to reduce unwanted aggregation of the virus or virus antigen and increase yield. [Index] Buffers, viruses, slants, antigens, tablets |