20241
We further observed that Pol kappa - deficient mouse embryo fibroblasts were abnormally sensitive to H2O2 treatment and displayed defects in both single - strand break repair and double - strand break repair .
 Chemical: H2O2
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: H2O2