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The Chemical Entities of Biological Interest (ChEBI) ontology is downloaded weekly from EMBL-EBI at The data is made available under the Creative Commons License (CC BY 3.0, For more information see: Degtyarenko et al. (2008) ChEBI: a database and ontology for chemical entities of biological interest. Nucleic Acids Res. 36, D344–D350.

Term:carbon-14 atom
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Accession:CHEBI:36927 term browser browse the term
Definition:A carbon atom that has formula C.
Synonyms:related_synonym: (14)6C;   (14)C;   Formula=[14C];   InChI=1S/C/i1+2;   InChIKey=OKTJSMMVPCPJKN-NJFSPNSNSA-N;   SMILES=[14C];   carbon, isotope of mass 14;   carbon-14
 xref: CAS:14762-75-5;   Wikipedia:Carbon-14

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Path 1
Term Annotations click to browse term
  CHEBI ontology 5022
    chemical entity 5022
      atom 5013
        nonmetal atom 4973
          carbon atom 4891
            carbon-14 atom 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 5022
    subatomic particle 5013
      composite particle 5013
        hadron 5013
          baryon 5013
            nucleon 5013
              atomic nucleus 5013
                atom 5013
                  main group element atom 4979
                    p-block element atom 4976
                      carbon group element atom 4892
                        carbon atom 4891
                          carbon-14 atom 0
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