ER negative

{
  "id": "MLC-T-ONC-002934",
  "term": "ER negative",
  "field": "Oncology and biomedicine",
  "definition": "Describes cells that do not have a protein that binds to the hormone estrogen. Cancer cells that are ER negative do not need estrogen to grow. This means that they will keep growing when estrogen is not present and do not stop growing when treated with substances that block estrogen from binding. Also called estrogen receptor negative.",
  "synonyms": [
    "estrogen receptor negative"
  ],
  "references": [
    "NCI Dictionary of Cancer Terms"
  ],
  "url": "https://mlchart.com/terminology/oncology/er-negative/"
}