The positive rate of measles antibody and geometrical mean titer were determined with ELISA and statistical analysis was made.
2
通过对免疫雏鸭的血清抗体滴度进行测定，证实该BAU - 1疫苗对雏鸭的免疫保护期在6周以上。
By testing the serum titers of vaccinated ducklings, it was demonstrated that the immune protection period for ducklings of this BAU-1 vaccine was more than 6 weeks.
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