serum例句

They are determining the serum - protein and cholesterol levels.
他们正在测定血清蛋白和胆固醇的浓度.

The serum is available to the general public.
一般公众均可获得血清.

The only available hyperimmune serum was of equine origin.
唯一可得到的超免疫血清来源于马.

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