Table 4. Estrogen receptor staining results and cold ischemia time of patients whose core biopsy and/or resection specimens showed weak estrogen receptor staining.

Case		1	2	3	4	5a	6	7a	8	9a	10	11a	12
Staining resultsb	Core biopsy	0	0	0	0	0	5w	7w	10w	30w	50w	70m	80s
	Resection	5w	1w	2w	3w	15w	5w	75s	70s	0	50w	8w	30w
Cold ischemia time (min)		95	108	114	171	110	109	140	105	122	93	115	174

^aThe information on these patients was included in Table 1.

^bThe staining results were shown in percentage followed by intensity. S, strong; m, moderate; w, weak.