from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A white crystalline nucleoside, C9H13N3O5, composed of one molecule each of cytosine and ribose.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A nucleoside consisting of cytosine linked to ribose

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a nucleoside component of DNA; composed of cytosine and deoxyribose


cyt(o)- + -id(e) + -ine2.
(American Heritage® Dictionary of the English Language, Fourth Edition)


  • Compared to human milk, cow's milk has lower levels of nucleotide as uridine, inosine, and cytidine.

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  • Atomic Energy Commission at that time, otherwise they certainly would have done the obvious follow-up experiment, using uniformly U-14C labeled cytidine themselves.

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  • Therefore by both criteria it appeared certain that the 14C reached the deoxyribose directly from the cytidine.

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  • It was obvious for me to ask if there might be direct utilization of the whole of cytidine, ribose and all, in the biosynthesis of deoxycytidine.

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  • Although U-14C cytidine did not label the deoxyribose of E. coli DNA, I found the deoxycytidine of DNA of rat organs to be almost uniformly labeled.

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  • It also shares similarities with the corresponding domains of a number of other cytidine deaminases, which belong to the same protein family as AID, but have very different functions another great story, for another day.

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  • Evolution of class switch recombination function in fish activation-induced cytidine deaminase, AID.

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  • Agmatine-conjugated cytidine in a tRNA anticodon is essential for AUA decoding in archaea Rethinking screening

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  • Footprinting experiments revealed protection of a single cytidine nucleotide (C3993) in the E-site of the 60S ribosomal subunit, thus defining a common binding pocket for the two inhibitors in the ribosome.

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  • Activation-induced cytidine deaminase (AID) is a B-cell-specific DNA mutator that plays a key role in the formation of the secondary antibody repertoire in germinal center B cells.

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