22915
Treatment with gefitinib induced mitochondrial dysfunction , cytochrome c release , caspase - 3 activation and poly ( ADP - ribose ) polymerase protein cleavage , indicating that apoptosis occurred in these cancer cells .
 Chemical: gefitinib; 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: gefitinib, poly ( ADP - ribose ) 
Answer:
 Chemical: gefitinib; Chemical: poly ( ADP - ribose )