The serum of the immunized ducklings were collected and the antibody titer were measured by neutralizing test.

同时对免疫的雏鸭采血，中和试验测定血清的效价。

youdao

The serum of the immunized ducklings were collected and the antibody titer were measured by neutralizing test.

同时对免疫的雏鸭采血，中和试验测定血清的效价。

youdao