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Phoebus Levene, circa 1930. After Miescher’s discovery, other scientists found better ways to purify the new substance. Nuclein was a crude extract and contained a lot of proteins. Once the proteins were removed, the "pure" substance became known as deoxyribonucleic acid because of its sugar structure (ribose-based) and its properties (acidic nature). Scientists, such as Phoebus Levene, began deconstructing the DNA components. They found that DNA was essentially a long-chain molecule, made up of four different nucleotides, ribose sugar, and phosphate.

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      History/Policy/Law,Chemistry,deoxyribonucleic acid,phoebus levene,chain molecule,oai:nsdl.org:2200/20081106034218328T,NSDL_SetSpec_BEN,proteins,General,Life Science,phosphate,scientists,dna components,image description,nucleotides,discovery,biological elements,NSDL

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      English

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