肝素可以从猪肠中提取而来。
If Catherine's diagnosis was wrong, the heparin would make the bleeding worse.如果柯瑟琳的诊断是错误的,那么肝素将会让出血状况更加恶化。
The FDA has received reports of hundreds of reactions and 19 deaths of patients after taking heparin.此前FDA共接到因使用肝素而引起上百起不良反应和19起患者死亡报告。