Etymology of heme

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

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        "1": "en",
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  "lexical": [
    {
      "pos": "noun",
      "glosses": [
        "The component of hemoglobin (and other hemoproteins) responsible for binding oxygen. It consists of an iron ion that binds oxygen and a porphyrin ring that binds the globin molecules; one molecule binds one molecule of oxygen."
      ],
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        "countable",
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