antigen paper

例句：

1. 1. The antigen paper is used to test for antibodies in the blood.
   抗原纸用于检测血液中的抗体。
2. 2. The antigen paper was designed to detect the presence of a specific virus.
   抗原纸被设计用来检测特定病毒的存在。
3. 3. The antigen paper was used as a diagnostic tool for early detection of diseases.
   抗原纸被用作早期诊断疾病的工具。