"CD20" meaning in English

{
  "etymology_text": "from Cluster of Differentiation",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "CD20 (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "a glycosylated phosphoprotein expressed on all stages of B cell development except the first and last"
      ],
      "id": "en-CD20-en-noun-XYFNUAq4",
      "links": [
        [
          "glycosylate",
          "glycosylate"
        ],
        [
          "phosphoprotein",
          "phosphoprotein"
        ],
        [
          "B cell",
          "B cell"
        ]
      ],
      "related": [
        {
          "english": "gene producing this protein in humans",
          "word": "MS4A1"
        }
      ],
      "synonyms": [
        {
          "word": "B-lymphocyte antigen CD20"
        }
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "CD20"
}

{
  "etymology_text": "from Cluster of Differentiation",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "CD20 (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "english": "gene producing this protein in humans",
      "word": "MS4A1"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms spelled with numbers",
        "English uncountable nouns",
        "English words without vowels",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "a glycosylated phosphoprotein expressed on all stages of B cell development except the first and last"
      ],
      "links": [
        [
          "glycosylate",
          "glycosylate"
        ],
        [
          "phosphoprotein",
          "phosphoprotein"
        ],
        [
          "B cell",
          "B cell"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "B-lymphocyte antigen CD20"
    }
  ],
  "word": "CD20"
}