Fig. 5

Immunohistochemical staining of ALDH1A1 protein in serous ovarian carcinoma (SOC) patients, benign tumors, and normal tissues. (A-A-1): Low cytoplasmic expression of ALDH1A1 in patients with SOC. (B-B-1): High cytoplasmic expression of ALDH1A1 was observed in SOC patients. (C-C-1): High ALDH1A1 expression was observed in benign tumors rather than tumor tissues. Human normal liver tissues as controls (D): negative and (E): positive. (F): Expression of ALDH1A1 was higher in normal ovarian tissue samples in comparison to benign tumors. (G): Isotype control. Figures have magnification of 100 × and 200×