方法以不同剂量霍乱疫苗免疫小鼠，用间接elisa方法检测小鼠全血的抗菌、抗毒抗体滴度，小鼠毒菌攻击法计算保护率。
Methods The mice were immunized by different doses of cholera vaccine. Titer of antiserum against cholera strain and toxin were tested by indirect enzyme-linked immunosorbent assay (ELISA).
实验组大多数存活小鼠都能耐受剂量递增（10~4—10~6）的L615白血病细胞的反复攻击。
Most of the survivors in test groups could tolerate repeated challenges with increasing dosages (10~4—10~6) of L615 leukemia.
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