TABLE 1.

Neutralizing antibody data from vaccinated animals at various weeks after challenge with SIVmac239

Animalwk postchallengeNeutralizing antibody titera to:
SIVmac251SIVmac239
80035094<20
310,419<20
623,097<20
1011,600<20
81035036<20
49,795<20
66,996<20
1012,947<20
83108037<20
32,466<20
87081034<20
36,297<20
61,369<20
102,412<20
87082052<20
36,941<20
62,024<20
101,822<20
930620282<20
312,917<20
65,630<20
104,703<20
96135082<20
38,436<20
68,333<20
102,366<20
970730211<20
311,135<20
67,274<20
1013,967<20
  • a Reciprocal serum dilution at which 50% of CEMx174 cells were protected from virus-induced killing, as measured by neutral red uptake. SIVmac251 was laboratory adapted.