In this case, this particular restriction enzyme cuts symmetrically like this, but not at the same point.

在我们这种情况下,这个限制性内切酶总是这样对称地切割,但两条链切割的位点不一样

耶鲁公开课 - 生物医学工程探索课程节选

If I took this same restriction enzyme and tried to cut the chromosomal DNA of a sickle patient, it wouldn't cut at that point because the wrong sequence is there.

而如果我用同样的限制酶,去切割病人的染色体DNA,那该酶是不会起作用的,因为基因序列不对

耶鲁公开课 - 生物医学工程探索课程节选

On the FAA's website, the reason listed for the restriction is "to provide a safer environment for law-enforcement activities, " and the point of contact listed for the restriction is an FBI special agent.

WSJ: Boston Bombing Suspect Killed in Shootout

But while free speech might be the starting point, the ECHR does allow for the restriction of those freedoms to safeguard "public safety, for the prevention of disorder or crime, for the protection of health or morals, protection of the reputation or rights of others".

BBC: Obscene stories or free speech?

While it is not difficult to see the point made by those in opposition to this sort of government interference and restriction, it would be wise for everyone to take a deep breath and gain a better understanding of what we are talking about before blowing our collective stacks.

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