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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:elemental molecular entity
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Accession:CHEBI:33259 term browser browse the term
Definition:A molecular entity all atoms of which have the same atomic number.
Synonyms:related_synonym: homoatomic entity;   homoatomic molecular entities;   homoatomic molecular entity

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  CHEBI ontology 19816
    chemical entity 19816
      molecular entity 19814
        elemental molecular entity 16247
          elemental aluminium + 95
          elemental bismuth + 0
          elemental boron + 12
          elemental carbon + 8778
          elemental halogen + 9213
          elemental hydrogen + 11
          elemental iron + 490
          elemental molecule + 4385
          elemental oxygen + 4403
          elemental pnictogen + 96
          elemental sulfur + 2
          monoatomic entity + 15182
          native element mineral + 385
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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.