Nuclein. The term used by Friedrich Miescher to describe the nuclear material he discovered in 1869, which today is known as DNA.
Nucleic acids were discovered in 1868 by Friedrich Miescher, who called the material 'nuclein' since it was found in the nucleus.[44] It was later discovered that prokaryotic cells, which do not have a nucleus, also contain nucleic acids.
Discovery of the mutant alpha synuclein genes raises genetic-testing issues similar to those for such other late-onset diseases as Alzheimer's disease and Huntington's disease.
Since it came from nuclei, Meischer named this new chemical, nuclein. Subsequently the name was changed to nucleic acid and lastly to deoxyribonucleic acid (DNA). Robert Feulgen, in 1914, discovered that fuchsin dye stained DNA.
His experiments revealed that nuclei contained a chemical that contained nitrogen and phosphorus but no sulfur. He called the chemical nuclein because it came from nuclei. It later became known as nucleic acid.
 See also: Human, Cells, Proteins, Protein, Enzyme
  
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