Why is intact mRNA difficult to purify?
A) Cells naturally contain RNases.
B) RNases are present on human skin.
C) Structural RNA in the ribosomes and circulating tRNA contaminate cytosol preparations.
D) RNases may be present in the environment.
E) All of the above.
Correct Answer:
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A)sarkosyl.
B)guanidium
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A)DNA
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