Table 2.

Neutralization of laboratory-adapted isolatesa

Animal no.ImmunogenConcn of rabbit IgG required (μg/ml)
NL4-3MN (50%)
50%90%95%
2219gp120755>1,000>1,000>1,000
222043>1,000>1,000>1,000
2221107>1,000>1,000>1,000
2164gp140<15.6161579850
2165<15.6<15.6401262
2166<15.6293571<200
  • a Concentration of rabbit IgG required to neutralize 50, 90, and 95% of virus.