Fig. 4

Immunohistochemical staining of SALL4 protein in serous ovarian carcinoma (SOC) patients, benign tumors, and normal tissues. (A, A-1): Low nuclear expression of SALL4 in patients with SOC. (B, B-1): High nuclear SALL4 expression in SOC patients. (C, C-1): Expression of SALL4 was found in nucleus in benign tumor. Human germ cell tumor of testis tissues (Seminoma) as controls (D): negative and (E): positive. (F): Expression of SALL4 was not observed in normal ovarian tissue samples. (G): Isotype control. Figures have magnification of 100 × and 200 ×