Hemagglutination assay (HA) to analyze VLP’s activity

A) Analysis of VLP’s activity by Hemagglutination assay (HA). Purified VLP1 and VLP2 were formulated and stored at five different conditions for one month. The activity of VLPs was determined by HA assay, in which storage condition 5 (SC5) is the best for both VLP1 and VLP2.