Table 1

Antibody response of guinea pigs to recombinant hemagglutinin protein rHA1from influenza virus H5N1.

Protein HI titer Neutralization titer rHA1 (insoluble) ≥ 1:160 ≥ 1:160 Denatured rHA1 < 1:20 < 1:10 Control < 1:10 < 1:10