Figure 2From: Low pH gel intranasal sprays inactivate influenza viruses in vitro and protect ferrets against influenza infectionLog reduction in Influenza A and avian Influenza titres after 1 min exposure to a pH 3.5 nasal gel spray composition in solution test versus a phosphate buffered saline control. PBS: Phosphate buffered saline, pH 7.0. PSZH: PCA/succinic acid/zinc acetate/hydroxypropylmethyl cellulose, pH 3.5.Back to article page