This is the time after maternal immunity has declined sufficiently to allow a vaccine response, but before infection with a damaging field virus has occurred.
大多数的父母代鸡群经过了IBD活苗和灭活油苗的免疫，以产生高水平的母源抗体对3-4周龄的雏鸡提供保护。
The reason and mechanism of abortion are extremely complex. Currently, the majority of domestic and foreign scholars think that the early embryo'loss is close related to immunity condition and the amount of hormone of the maternal-fetal.
流产的原因及机理非常复杂，目前国内外大多数学者认为早期胚胎丢失与母胎界面的免疫状态和激素水平有很大关系。
In the countryside, there will be the multiple security system relating to the old-age insurance, children's safety and health, cooperative medicare, maternal and child health care, planned immunity and birth-control operation safety;
在农村，建立养老、子女安康、合作医疗、母婴保健保偿、计划免疫保偿和节育手术安全等多种形式的保障制度。
It is felt the killed vaccine either neutralize the remaining maternal antibody or just more easily starts the development of immunity.
灭活苗可以中和剩余的母源抗体，或更易于激活机体免疫力的产生。
Objective: To evaluate the relationship between the embryo resorption rate (RR) and the status of local immunity at the feto-maternal interface in pregnant NOD/SCID mice.
目的研究NOD/SCID孕鼠胚胎吸收率（Resorptionrate，RR）与母-胎界面局部免疫状况的关系。
AIM: To address whether the analysis of CD45~+ CD86~+ cells isolated from para-aortic lymph nodes (PLNs) is valuable in assessment of the status of local immunity at the feto-maternal interface.
目的：检测主动脉旁淋巴结（PLN）CD45+CD86+细胞，用于间接分析小鼠母-胎界面局部免疫状况。
The influence of maternal antibodies on the immunity of piglets inoculated with living swine erysipelas vaccine
母源抗体对仔猪接种猪丹毒菌苗后产生免疫力的影响
A Clinical Study of the Relationship of Hepatitis B Virus Infection in Maternal-infant Transmission after a Symphysial Immunity
联合免疫后乙肝病毒母婴传播相关因素的临床研究
STUDIES ON THE CHANGE PATTERNS OF TURKEY'S MATERNAL ANTIBODY AGAINST NEWCASTLE DISEASE (ND) AND THEIR RELATIONSHIP TO IMMUNITY The Investigation of Maternal Antibody of Infectious IBD of Chicken in Hebei
火鸡新城疫母源抗体消长规律及其与免疫的关系河北省鸡传染性法氏囊病母源抗体的调查
In control group, the pregnant sows were not injected with hog cholera lapinized vaccine during gestation, the immunity procedure were established according to maternal antibody levels of the piglets.
对照组，妊娠母猪不免疫，仔猪根据其抗体水平确定免疫程序。
AIM: To address whether the analysis of CD45 ~ + CD86 ~ + cells isolated from para-aortic lymph nodes (PLNs) is valuable in assessment of the status of local immunity at the feto-maternal interface.
目的：检测主动脉旁淋巴结（PLN）CD45+CD86+细胞，用于间接分析小鼠母-胎界面局部免疫状况。