GRIM-1 expression levels in normal and tumor specimens analyzed by immunohistochemistry.

@Expression level graded on an arbitrary scale (%) using signal ratio of GRIM-1 to DAPI.

+ (0–20) – Severe loss, ++ (21–40) – Significant loss, +++ (41–60) – Moderate loss, ++++ (61–80) – Slight loss, +++++ (81–100) – No loss.