Table 1.

Specifications of antibodies used.

Marker	Clone	Manufacturer	Dilution	Pattern of staining
				Nuclear	Cytoplasm	Membranous
ER	SP1	Ventana	RTU	+	NA	NA
PR	1E2	Ventana	RTU	+	NA	NA
HER2	4B5	Ventana	RTU	NA		+
High molecular weight cytokeratins	34βE12	Dako	1 : 50	NA	+	NA
c-Kit (CD 117)	Polyclonal	Dako	1 : 400	NA	+	+
EGFR	EP774Y	Biocare	RTU	NA	+	+

∗ER, estrogen receptor; PR, progesterone receptor; EGFR, epidermal growth factor receptor; RTU, ready to use; NA, not applicable.