The absence of this smaller region tells you that this sample came from a sickle patient.

小片段的缺失就能告诉你,该样本是取自病人的

耶鲁公开课 - 生物医学工程探索课程节选

The danger is that it's being purified from patients that have a disease and so you want to make sure that there's not other diseases that are present in that sample at the same time.

危险在于,这是从带有疾病的病人,身上纯化出来,因此你想确保,在那个样本中不会同时,携带其它疾病

耶鲁公开课 - 生物医学工程探索课程节选