Fig. 1

ER score in primary tumor and lymph node metastases. a: The cases in which all cores obtained were found to be ER negatively stained (0+), strongly expressed (3+), or various ER score in primary tumor. b: The cases in which all cores obtained were found to be ER negatively stained (0+), strongly expressed (3+), or various ER score in lymph node metastases. c, e, and g: The percentage of ER expression (0+, 1+, 2+, 3+) in lymph node metastases from patients with all cores obtained to be ER strongly expressed (c), negatively stained (e), or various ER score (g) in primary tumor. d, f, and h: ER expression status in lymph node metastases from patients with all cores obtained to be ER strongly expressed (d), negatively stained (f), or various ER score (h) in primary tumor