801
CPE treatment significantly inhibited H2 O2 - induced apoptotic processes such as chromatin condensation , caspase 3 activation and anti - poly ( ADP - ribose ) polymerase ( PARP ) cleavage .
 Chemical: H2 O2; Chemical: poly ( ADP - ribose )
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: H2 O2, poly ( ADP - ribose ) 
Answer:
 Chemical: H2 O2; Chemical: poly ( ADP - ribose )