持久性研究
持久性研究
这是因为再次接种时前次的免疫性仍然存在,抑或是因为在研究人群中再次接种率较低,对此目前尚无定论。
The study suggested that immunosuppressed HIV-infected children have a low persistence of antibodies to the vaccines of the Expanded Program on Immunization (EPI, WHO).研究报告表明,感染艾滋病毒并免疫抑制的的儿童对免疫扩大计划(EPI, WHO)疫苗的有一个低持久性抗体。
Study of the persistence of mutual fund performance has very important significance in the theoretical and practical area.对基金业绩持续性的研究在理论和实践上都有着重要的意义。