FIG 4.
Inhibitory effect of HHA on virus release. MDCK cells were infected with A/Hong Kong/7/87 influenza virus. At 6 h p.i., the cells were washed and compounds were added. At 12 h p.i., the infectious virus titer of cell culture supernatants was determined by titration in MDCK cells. Data shown are the mean ± SD of four independent experiments.
