Figure 1
From: High expression of NQO1 is associated with poor prognosis in serous ovarian carcinoma
IHC staining of NQO1 protein in ovarian tumor samples. (A) Negative expression of NQO1 protein in a benign serous tumor. (B–C) Weak positive expression of NQO1 protein (B) and positive expression (C) in atypical cells of borderline serous tumors. (D) Strong positive expression of NQO1 protein in serous carcinoma cells, in a patient with metastasis. (E) Positive expression of NQO1 protein in a serous carcinoma patient without metastasis. Scattered, strongly positive-staining cancer cells are seen (arrows). (F) Negative expression of NQO1 protein in a serous carcinoma patient without metastasis. Original magnification, A–F: ×200.