Content mixing of wt and mutant F proteins.

<p>Quantification of content mixing directed by wt or mutant F proteins with their homologous HN proteins as measured by β-galactosidase activities. Values are expressed as percentages of content mixing detected in cells transfected with wt F and HN proteins. The experiment was performed in triplicate; the data are shown as the mean±SD (*<i>P</i><0.05, **<i>P</i><0.01, ***<i>P</i><0.001).