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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.

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Accession:CHEBI:60871 term browser browse the term
Definition:The selenium ion with two positive charges.
Synonyms:related_synonym: Formula=Se;   InChI=1S/Se/q+2;   InChIKey=MFSBVGSNNPNWMD-UHFFFAOYSA-N;   SMILES=[Se++];   Se(2+);   Se2+;   selenium dication

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Term paths to the root
Path 1
Term Annotations click to browse term
  CHEBI ontology 21562
    chemical entity 21560
      molecular entity 21545
        ion 16626
          inorganic ion 16402
            selenium ion 0
              selenium(2+) 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 21562
    subatomic particle 21548
      composite particle 21548
        hadron 21548
          baryon 21548
            nucleon 21548
              atomic nucleus 21548
                atom 21548
                  main group element atom 21454
                    p-block element atom 21454
                      p-block molecular entity 21453
                        chalcogen molecular entity 20530
                          selenium molecular entity 3149
                            elemental selenium 1599
                              selenium ion 0
                                selenium(2+) 0
paths to the root