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1·This may be achieved by active or passive immunization.

主动和被动免疫可以达到保护易感者的目的。

2·The advantages of passive immunization against inhibin of ewes were economic, security and good effect.

制备高效抑制素抗体对羊进行被动免疫具有经济、安全、效果好等优点。

3·Common oral diseases such as periodontitis and dental caries can be prevented effectively by passive immunization.

诸如牙周炎和龋齿的普通口腔疾病可以通过被动免疫有效预防。

4·Objective to investigate the effect of passive immunization of fetus by injection of HBIG to mothers for prevention of HBV intrauterine infection.

目的探讨经母亲对胎儿行被动免疫在预防乙型肝炎病毒(HBV)宫内感染中的作用。

5·Objective To study the efficacy and possible mechanism of active and passive immunization during pregnancy in preventing intrauterine HBV infection.

目的探讨孕妇主动与被动联合免疫预防乙型肝炎病毒（H BV）宫内感染的作用和机理。

6·The passive immunization of newboth calves was obtained by colostrums, but the influencing degree of the effect the heat stress on passive immunization of newboth calves is dimness.

新生犊牛通过初乳获得被动免疫，但是关于热应激对新生犊牛被动免疫的影响程度尚不清楚。

7·Objective To evaluate the efficacy and safety of lamivudine treatment and active-passive immunization during the last trimester of pregnancy in preventing intrauterine HBV infection.

目的评估妊娠晚期应用拉米夫定联合主被动免疫对于阻断HBV母婴传播的疗效及安全性。