FIG. 1.
Neutralizing antibody response elicited by EIAVD9 vaccine. (A) An enzyme-linked immunosorbent assay-based infectious-center assay was used to measure EV0-specific neutralizing antibodies in DOC serum from each vaccinated pony. (B) The neutralization assay was also used to quantify the level of challenge strain-specific neutralizing antibodies in 4-wpc serum from each vaccinated pony. The ponies were grouped according to the indicated challenge strain. Underlined ponies were protected from disease.