Etymology of CD4

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

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      "name": "initialism",
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        "1": "en",
        "2": "cluster of differentiation type 4"
      },
      "expansion": "Initialism of cluster of differentiation type 4"
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      "cluster",
      "cluster#English"
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      "differentiation#English"
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  "lexical": [
    {
      "pos": "noun",
      "glosses": [
        "A glycoprotein found on the surface of helper T cells and several other types of immune cells.",
        "A CD4+ helper T cell."
      ],
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        "countable",
        "uncountable"
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