15906
11 beta - Hydroxysteroid dehydrogenase type 1 contributes to the balance between 7 - keto - and 7 - hydroxy - oxysterols in vivo .
 Chemical: 11 beta - Hydroxysteroid; Chemical: 7 - keto - and 7 - hydroxy - oxysterols
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: 11 beta - Hydroxysteroid; Chemical: 7 - keto - and 7 - hydroxy - oxysterols