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Sulfide enhanced the cleavage of caspase - 3 and poly ( ADP - ribose ) polymerase and induced early cellular apoptosis .
 Chemical: Sulfide; Chemical: poly ( ADP - ribose )
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: Sulfide; Chemical: poly ( ADP - ribose )