C. Percentage of Brca1ex2/+;Trp53bp1-/- and Brca1ex2/ex2;Trp53bp1-/- mice showing signs of abnormal tissue morphology at death. N=46 animals inspected for Brca1ex2/+;Trp53bp1+/+, N=54 animals inspected for Brca1ex2/ex2/Trp53bp1-/-. 