8597
We previously reported that exposure of gpt delta rats to OTA induced both mutations in the red / gam gene ( Spi ( - ) ) , suggesting large deletion mutations , and fluctuations in genes transcribed by p53 in the kidneys , which were associated with DNA double - strand break ( DSB ) repair , particularly homologous recombination ( HR ) repair .
 Chemical: OTA
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: OTA