Recently, the FDA approved an enzyme designed to treat PKU.

，国药物总局刚批准了被设计用来治疗 PKU 的酶。

Two FDA approved drugs are also available for the treatment of PKU.

两种国FDA批准的药物现在也可用于苯丙酮尿症的治疗。

Doctors found that Carol had an unusual disease called PKU. This caused her to have trouble learning.

医生发现卡罗尔得了一种叫苯酮尿症的不寻常的疾病。这她学习有困难。

So you may be familiar with PKUs, because all infants in the US are required to be tested for PKU.

你们也许对 PKU 挺熟悉的，因为在国，所有婴儿都被要求进行 PKU 检测。

An example of this is called phenylketonuria, or PKU for short.

一叫做苯丙酮尿症，简称PKU。

An example of one would be PKU.

一就是苯丙酮尿症（PKU）。

However, new enzymes may soon enable PKU patients to eat whatever they want.

然而，新的酶可能很快就能让苯丙酮尿症患者想吃什么就吃什么。

People with PKU are unable to properly metabolize or digest phenylalanine, which is one of the 20 common amino acids that we've been talking about.

患有苯丙酮尿症的人无法正常代谢或消化苯丙氨酸，这是一种我们之前提到的20种常见氨基酸之一。

The consequence of ingesting phenylalanine for people with PKU is that they are subject to permanent intellectual disabilities, so it's a scary thing to have.

苯丙酮尿症患者摄入苯丙氨酸的后果是可能会导致永久性的智力障碍，所以这是一种很可怕的情况。

So may be familiar with PKUs, because all infants in the US are required to be tested for PKU. I remember when Anthony, my son, had his heel pricked to test for it.

所以你们可能对苯丙酮尿症比较熟悉，因为国的所有新生儿都必须接受苯丙酮尿症的检测。 我记得我儿安东尼的小脚后跟被扎了一下进行这项检测。