TABLE 1.

Titers of rNDV V(−) mutants in embryonated chicken eggsa

VirusTiter in eggs
6 days old10 days old
rNDV3 × 1092.5 × 109
rNDV V(−)2ch4 × 1061 × 105
rNDV V(−)stop1 × 10210
  • a Each embryonated egg was inoculated with 10 TCID50 and incubated for 3 days. Infectious titers from the allantoic fluids were determined by IFA in Vero cells.