breast cancer

Progesterone receptor (PR)

The progesterone receptor (PR) is a special type of protein found inside certain cells in the body. It belongs to a group of proteins called nuclear hormone receptors, which control how cells respond to hormones. Progesterone receptors specifically respond to the hormone progesterone, which plays a vital role in reproductive health, menstrual cycles, pregnancy, and …
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Estrogen receptor (ER)

The estrogen receptor (ER) is a special type of protein found inside certain cells throughout the body. It belongs to a family of proteins known as nuclear hormone receptors, which control how cells respond to hormones. Specifically, estrogen receptors respond to the hormone estrogen, which plays a key role in many important functions within the …
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