Fig. 1.
Comparison of immunostaining patterns of Her-2, EGFR and cyclin D1 in primary tumor and the corresponding metastatic lymph node (LN) (×200). 3+/3+ expression of Her-2 in primary tumor (A) and LN (B); 2+/- expression of Her-2 in primary tumor (C) and LN (D); 1+/2+ expression of Her-2 in primary tumor (E) and LN (F), 3+/- expression of EGFR in primary tumor (G) and LN (H); -/2+ expression of EGFR in primary tumor (I) and LN (J); -/3+ expression of cyclin D1 in primary tumor (K) and LN (L).