Breast cancer cells without progesterone receptors. These receptors are special proteins that the hormone progesterone binds to. PR negative breast cancer cells do not depend on progesterone to grow.
Read more about hormone receptor status.
Audio contributed by: Maxine Jones
Breastcancer.org is a non-profit organization dedicated to providing information and community to those touched by this disease. Learn more about our commitment to providing complete, accurate, and private breast cancer information.
Breastcancer.org 7 East Lancaster Avenue, 3rd Floor Ardmore, PA 19003
©2011 Breastcancer.org - All rights reserved.
