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简述核酸的分离纯化原则。

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血浆游离DNA

长链非编码RNA

1. He is allergic to peanut so he may __ in a rash when he eats it.2. In spite of his efforts, he ultimately failed to his parents' expectation.3. When you open the lid of the box, a clown .4.His heart _ Mrs. Smith and her fatherless child.5.Shall we the flea market to see if we can find something interesting?6.The drug traffickers were arrested after the police were by local residents.7. We started off at dawn and the sea for surfing.8. Peter is an independent person and he never .9. If you a distance, you measure it by walking from one end of it to the other.10. He asked my friend to __ every piece of information that I have told him.

1. Supervision of students on teaching practice is ___ inadequate. (woe)2. Who can tell me with _ that I’m mistaken? (assure)3. He _ his colleague by criticizing him in front of his boss. (humiliation)4. The twins fight tooth and nail over the slightest . (agree)5. At that time, it seemed ridiculous and _. (exasperate)6. Vitamin _ in the diet can cause illness. (deficient)7. You have been under strain for too long; you need some _ badly. (relax)8. He took the advantage of this chance to his boss. (embarrassment)9. You need to be _ in giving advice, humble in accepting it. (discretion)10. There have been many complaints about the young coach’s___ and lack of judgment. (mature)