Table 3. MV particle infectivity of WR-A26, WR-A26-H2-CAT and the revertant virus WR-H2-CAT-Rev1.

MV	Infectivity (Mean ±SD)
WR-A26a	42.5 (±15.4)
WR-A26-H2-CAT	147(±27)*
WR-A26-H2-CAT-Rev1	33.6(±16.7)

^aWR-A26 was used as a positive control in the experiments.

*Data were analyzed using a two-tailed unpaired student’s t test. *, P<0.05.