PR


Meaning of PR in English

Progesterone receptor negative. Breast cancer cells that do not have a protein (receptor molecule) to which progesterone will attach. Breast cancer cells that are PR- do not need the hormone progesterone to grow and usually do not respond to hormonal therapy.

NCI English Dictionary of Cancer Terms.      Английский словарь раковых терминов NCI(Национальный институт злокачественных новообразований).