9301
The effects of mitragynine on human CYP3A4 protein expression were determined using an optimized hCYP3A4 - HepG2 cell - based assay .
 Chemical: mitragynine
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: mitragynine