antigen-antibody ratio

例句：

1. 1. The testresults showed that the antigen-antibodyratio was high in this patient'sblood sample.
   测试结果显示，这名患者的血液中抗原抗体比值较高。
2. 2. The doctorexplained that the antigen-antibody ratio is an importantindicator for evaluating the severity of thedisease.
   医生解释说，抗原抗体比值是评估疾病严重程度的一个重要指标。
3. 3. In orderto develop a vaccine, scientists need todetermine the antigen-antibody ratio andunderstand how it affects the immune system.
   为了开发疫苗，科学家需要确定抗原抗体比值并了解它如何影响免疫系统。