TP53 and neoplasm: We analyzed 90 tp53+/m zebrafish by histology and determined that the overall tumor incidence was 82% in brca2+/+;tp53+/m zebrafish, 91% in brca2+/m;tp53+/m zebrafish, and 100% in brca2 m/m;tp53+/m zebrafish (Table 1).