cytosine /cy·to·sine/ (si´to-sēn) a pyrimidine base occurring in animal and plant cells, usually condensed with ribose or deoxyribose to form the nucleosides cytidine and deoxycytidine, major constituents of nucleic acids. Symbol C.
cytosine
cytosine [si´to-sēn]
cytosine arabinoside cytarabine.
cy·to·sine (s  t -s n )n. Abbr. C A pyrimidine base that is an essential constituent of RNA and DNA. |
cytosine
[sī′təsin]
a pyrimidine base that is a component of DNA and RNA. In free or uncombined form it occurs in trace amounts in most cells, usually as a product of the enzymatic hydrolysis of nucleic acids and nucleotides. On hydrolysis, it is converted to urea and ammonia. See also thymine, uracil.
cytosine [si´to-sēn]
a pyrimidine base found in nucleic acids.
cytosine arabinoside cytarabine.
cytosine
a pyrimidine base found in the nucleic acids, deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).
cytosine arabinoside
see cytarabine.
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