三批1500羽肉鸭雏鸭母源抗体消长规律的试验表明，雏鸭母源抗体水平高低及维持时间长短与父母代抗体水平高低呈正比。
The dynastic indicated that the maternal antibody level and its maintenance time of 1500 meat ducklings from three groups paralleled to that of their parents.
采用IHA实验方法监测猪瘟灭活疫苗免疫的猪抗体产生水平，并对仔猪母源抗体的消长规律进行了研究。
Antibodies in swine induced by classical swine fever inactivated vaccines were evaluated by IHA test, and the maternal antibodies in piglets were studied.
结论不同型别的毒株表现出交替占优势的特征，人群流感抗体水平的消长与优势株的型别一致。
Conclusion Different types of strains predominated alternatively, and the rise and fall of influenza antibody level among people conformed to the type of dominant strain.
婴幼儿RSV抗体水平在生后6个月内迅速降低，6个月以后抗体的滴度随年龄消长，7 -14岁时水平最高。
The RSV antibody titers in neonates and infants decreased rapidly within 6 months after birth and then increased gradually with a maximum level at 7 ~ 14 years old.
婴幼儿RSV抗体水平在生后6个月内迅速降低，6个月以后抗体的滴度随年龄消长，7 -14岁时水平最高。
The RSV antibody titers in neonates and infants decreased rapidly within 6 months after birth and then increased gradually with a maximum level at 7 ~ 14 years old.
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