Fig. 2From: The prognostic value of stromal and epithelial periostin expression in human breast cancer: correlation with clinical pathological features and mortality outcomeTumour specimens corresponding to the 4 PN phenotypes identified based both on epithelial and stromal expression rates (see text). Negative: 0 % of stained cells; positive: at least 1 % of stained cells; low: less than 90 % of stained cells; high: more or equal to 90 % of stained cellsBack to article page