FIG 2.

Neuraminidase activity affects local virion shedding without significantly changing shedding to the supernatant. (A) Schematic of neuraminidase (NA)-swap strains and their quantification of local virion shedding. The wild-type results presented previously are shown for comparison. The data are combined from three biological replicates (at least nine sites of infection/replicate). The P values are determined by independent t tests. (B) Comparison of virions detected in the supernatant (average per HA-positive cell) between wild-type and NA-swap strains. The data are combined from three biological replicates. Error bars represent standard deviation. The P values are determined by independent t tests.