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. Author manuscript; available in PMC: 2020 Aug 25.
Published in final edited form as: Toxicol Pathol. 2020 Jun 16;48(5):616–632. doi: 10.1177/0192623320931768

Table 3.

Grading Criteria

Uterine tissue Grade
No discernible abnormality Normal
1–25% abnormal Minimal
26–50% abnormal Mild
51–75% abnormal Moderate
>75% abnormal Marked