Fig. 2

Representative images of TOX staining in ovarian cancer tissue.A Stain intensity was evaluated with a 4-grading system: 0 = negative, 1 = weak, 2 = moderate and 3 = strong. B The percentage of positive cells were scored as follows: 0 for no cell stained, 1 for 1 − 25% of cells stained, 2 for 26–50% of cells stained, 3 for 51–75% of cells stained and 4 for more than 75% of cells stained