如何得到理想的DNA酶切效果？How to get a better DNA cut results?

A) DNA洗脫前沒有充分風干; B) DNA純度不夠; C) DNA 量太多; D) 酶質(zhì)量問題。

A) Before DNA elution, WB2 residue was not dry out; B) DNA purity was not high enough; C) Too much DNA; D) Poor quality of digestion enzyme.