On this basis, self made triplex vaccine is adopted to immunize 4 lots (13852) of prenatal chickens to carry out field immunologic test.
在此基础上，用自制三联苗免疫产前鸡4批共3852只，进行了田间免疫试验。
On this basis, self made triplex vaccine is adopted to immunize 4 lots (13852) of prenatal chickens to carry out field immunologic test.
在此基础上，用自制三联苗免疫产前鸡4批共3852只，进行了田间免疫试验。
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