Vermaak, Jacobus Stephanus2014-02-062014-02-062014-02-06http://hdl.handle.net10539/13678Immunohistochemical staining for oestrogen and human epidermal growth factor receptor (HER)-2 is essential in the management of breast cancer patients. Two histological specimens are usually obtained during a breast cancer patient’s treatment: the core biopsy and the final excision specimen.enBreast NeoplasmsBiopsyA comparison between oestrogen and HER-2 immunohistochemical staining of core and excision biopsy specimens in breast cancerThesis