"The Maronites have never had, and will never have, any site like the Qadisha Valley, in the future, to present the Maronitism as a culture and as a civilized community ...

VOA: standard.2010.08.05

Here the unique thing was that there's a restriction site inside that is present in normal DNA and not present in sickle DNA.

刚才例子中,特性就是在正常的基因中,有酶切位点,而在患者的基因中却没有

耶鲁公开课 - 生物医学工程探索课程节选