20761
Mechanistic studies revealed that the new PARP1 inhibitors significantly inhibited H2O2 - triggered PARylation in SKOV3 cells , induced cellular accumulation of DNA double - strand breaks , and impaired cell - cycle progression in BRCA2 - deficient cells .
 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