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3-12-10 DNA-1-color

The nucleus then took on a new importance the

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Unformatted text preview: ican cochineal insects. The nucleus then took on a new importance. The Discovery of Nuclein Friedrich Miescher Friedrich (1868) was a physician who became interested in investigating the chemical chemical composition of nuclei. He isolated a He compound from the nuclei of pus cells pus that came from used bandages obtained from a hospital. The Chemistry of Nuclein The When Miescher removed When the fat from pus cells (white fat from blood cells) with alcohol alcohol and removed the protein and protein with pepsin-containing with pepsinpig gastric mucosa, something still remained in the nuclei. He called the new He compound, which contained carbon, nitrogen and and phosphorus, nuclein. He nuclein determined that nuclein had the following chemical formula, C29H49N9P3O22. The Chemical Basis of Identity? The • In a speculative note submitted along with his other work Miescher (1869) suggested that the study of individual individual nucleins may reveal something about the differences betw...
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