American Heritage® Dictionary of the English Language, Fourth Edition
- n. Any of the substances present in the nucleus of a cell, consisting chiefly of proteins, phosphoric acids, and nucleic acids.
Century Dictionary and Cyclopedia
- n. The phosphorized nitrogenous constituent of cell-nuclei. It is found in two modifications, the one soluble in alkali carbonates and hydroxids, the other insoluble in carbonates and only slowly soluble ill hydroxids. It is probably a mixture of organic phosphorus compounds with various proteids.
GNU Webster's 1913
- n. (Physiol. Chem.) A constituent of the nuclei of all cells, containing protein and nucleic acid. It is a colorless amorphous substance, readily soluble in alkaline fluids and especially characterized by its comparatively large content of phosphorus. It also contains nitrogen and sulphur.
- From German Nuclein, corresponding to nucleus + -in. (Wiktionary)
“The essential and indispensable element of the nucleus is called nuclein (or caryoplasm); that of the cell body is called plastin (or cytoplasm).”
“Because it resided in the nuclei of cells, he called it "nuclein".”
“The small central particle of nuclein which is formed from this combination of the nuclei is the stem-nucleus, or the first segmentation nucleus; the new-formed cell, the product of the impregnation, is our stem-cell, or "first segmentation sphere" (Figure”
“He called this compound nuclein; today we call it nucleic acid.”
“If we now summarize the results of the investigations of loosely bound nuclein substances, the result is”
“As a result of his work on the action of phlorhizin, a glucoside provoking glycosuria, and another one on nuclein metabolism in man, he was appointed”
“Some of the albuminoids, as nuclein, are equal in food value to protein, while others have a lower food value.”
“Neither the assimilation of new material food, nor its use in tissue building can be effected without the presence of free oxygen and nuclein, or corpuscular elements of the blood.”
“When alcohol or any other substance, introduced into the blood, retards the tissue waste, as shown by the diminished amount of excretory products, it must do so by either diminishing the amount of free oxygen in the blood, by impairing the vasomotor and trophic nerve functions or by direct impairment of the properties of the nuclein or protogen elements of the blood and tissues.”
“(DNA) 1869 - Fredrick Meischer Swiss biochemist Looked at cells (pus cells and salmon sperm) Isolated nuclein (DNA) 1800's → 1900's Search for hereditary material Features of heredity (Cells / DNA) Able to replicate Able to store large amounts of information ”
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