Groups 1,2 and 3 were injected with 1 mL serum preparation,1 mL “shuangkang”(containing penicillin 1 000 unit and streptomycin 1 000 unit per mL) and 1 mL physiological saline respectively.
选用12日龄蛋公雏90只,随机分成3组,Ⅰ组每羽肌注鸡血清制剂1mL;Ⅱ组每羽肌注“双抗”1mL(含青、链霉素各1000单位);Ⅲ组每羽肌注生理盐水1mL。
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