Determination of tumor hormone sensitivity by immunohistochemistry (ER, PR)
Immunohistochemical testing for estrogen receptors (ER, Estrogen Receptor) and progesterone receptors (PR, Progesterone Receptor) is an important diagnostic method that allows the presence and level of expression of hormonal receptors in tumor cells to be determined.
The test plays a key role in the diagnosis and selection of treatment strategies for patients with breast cancer and a number of other hormone-dependent neoplasms.
Biomaterial: paraffin block