MedicalTerminology DB
General Medical Terms

ER-

/ /•

1 Definition of ER-

Meaning of ER-: Describes cells that do not have a protein to which the hormone estrogen will bind.

Describes cells that do not have a protein to which the hormone estrogen will bind. Cancer cells that are ER- do not need estrogen to grow, and usually do not stop growing when treated with hormones that block estrogen from binding. Also called estrogen receptor negative.

For learning, not diagnosis. This glossary provides general educational information and is not a substitute for advice from a qualified healthcare professional. If you may be experiencing a medical emergency, contact local emergency services.