5741
This study was designed to evaluate the in vivo activity of cytochrome P450 3A ( CYP3A ) in 49 healthy Japanese subjects aged 22 - 58 years using endogenous cortisol 6 beta - hydroxylation clearance [ CLm ( 6 beta ) ] , a novel biomarker for CYP3A phenotyping .
 Chemical: cortisol
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: cortisol