Table 4.

 Correlations among estrogen receptor (ER), progesterone receptor (PR), tumor protein 53 (P53), human epidermal growth factor receptor 2 (HER‐2), and nestin expression in ductal breast carcinoma

Characteristic	r‐value	F‐value	P‐value
ER vs PR	0.211	5.501	0.021
ER vs HER‐2/neu	0.05	0.296	0.588
ER vs P53	0.087	0.899	0.345
P53 vs HER‐2/neu	0.038	0.172	0.679
Nestin vs ER	0.365	18.154	0.000
Nestin vs PR	0.298	11.526	0.001
Nestin vs P53	0.291	10.896	0.001
Nestin vs HER‐2/neu	0.029	0.102	0.750