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We used genetically modified mice to investigate the contribution of 11 beta HSD1 to the balance of circulating levels of 7KC and 7 beta OHC in vivo , and dissected in vitro the kinetics of the interactions between oxysterols and glucocorticoids for metabolism by the mouse enzyme .
 Chemical: 7KC; Chemical: 7 beta OHC; Chemical: 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: 7KC; Chemical: 7 beta OHC; Chemical: oxysterols