COVID-19 Updates: Please know that patient safety remains our top priority. Extra steps are being taken to keep you safe.
Please call 716.631.2500 to schedule an appointment.  Click here to learn more.



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

Leave a Reply