6887
With healthy volunteers , the mean plasma concentration of 4 beta , 25 ( OH ) 2 D3 was increased 60 % ( p < 0 . 01 ) after short - term rifampin administration .
 Chemical: 4 beta , 25 ( OH ) 2 D3; Chemical: rifampin
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: 4 beta , 25 ( OH ) 2 D3; Chemical: rifampin