adj
Meaning 1
Of a breast cancer: characterized by the lack of expression of estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor 2 (HER2).
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
Topics: medicine, oncology, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided