Fig. 4

Hormonal receptor status determination indicating a strong immunostaining of tumor cells for estrogen receptors, IHC staining at 100 x original magnification (A); a moderate immunostaining of nearly all cells for progesterone (PR) receptors, IHC at 40 x original magnification (B), and negative immunoexpression of all tumour cells by HER-2, IHC at 40 x original magnification (C)