serum coagulator

例句：

1. 1. The patient's blood was tested for the presence of a serum coagulator.
   患者血液检测以确定是否存在血清凝固剂。
2. 2. The serum coagulator is used to prevent blood clots in patients with certain medical conditions.
   血清凝固剂用于防止患有某些医疗状况的患者形成血块。
3. 3. The research team discovered a new serum coagulator that could potentially save lives.
   研究小组发现了一种新型的血清凝固剂，可能挽救生命。