There are hundreds,thousands of them known now, and each one has a specific character and one aspects of its character is that it only binds and cuts at a particular sequence of DNA.

已知的有成百上千种,每一种都有自己的特性,特性之一是,只结合和切割特定的某一种DNA序列

耶鲁公开课 - 生物医学工程探索课程节选

Removing all character-specific areas is an option, and only including areas that give boosts to certain character-types, but even this could risk upsetting the balance.

FORBES: Connect

"Each standalone film will focus on a specific character, " Lucasfilm said on its starwars.com site.

CNN: Disney: 'Star Wars' spinoffs there will be

In Evergrace, different clothes augment specific character attributes such as stamina, strength, and luck, giving the game a new twist in role playing adventure.

CNN: PS2 Review: Evergrace