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Table 1 Immunohistochemical analysis of mammary tumor cells

From: Breast metastasis of gastric signet-ring cell carcinoma: a case report and literature review

Antibodies P/N Antibodies P/N
CK7 + GST-Π ++
CK20 + Ki-67 labeling index 60%
EGFR + PR
ER P-gp
ErbB2/HER-2 + TOPO-II ++
GCDFP-15 Villin +
  1. P/N: positive/negative; CK: cytokeratin; EGFR: epidermal growth factor receptor; ER: estrogen receptor; ErbB2/HER-2: human epidermal growth factor receptor 2; GCDFP-15: gross cystic disease fluid protein-15; GST-Π: glutathione S transferases Π; PR: progesterone receptor; P-gp: P-glycoprotein; TOPO-II: topoisomerase II; −: no cells positive by IHC; ±: sometimes weak positive, sometimes negative by IHC; +: <25% of cells positive by IHC; ++: 25%–50% of cells positive by IHC; +++: >50% of cells positive by IHC.