2481
Quantitative analysis of the interaction of constitutive androstane receptor with chemicals and steroid receptor coactivator 1 using surface plasmon resonance biosensor systems : a case study of the Baikal seal ( Pusa sibirica ) and the mouse .
 Chemical: androstane; Chemical: steroid
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: androstane; Chemical: steroid