14611
This investigation tested the hypothesis that CYP2B6 is a prominent CYP isoform responsible for clinical methadone N - demethylation and clearance , using the in vivo mechanism - based CYP2B6 inhibitor ticlopidine , given orally for 4 days .
 Chemical: methadone; Chemical: N; Chemical: ticlopidine
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: methadone; Chemical: N; Chemical: ticlopidine