4776
The recently identified Delta22 - isomer of beta - muricholate contributed for 5 . 4 % and 18 . 3 % ( P < 0 . 01 ) to the pool in control and EE - treated rats , respectively , but could not be detected in bile after exhaustion of the pool .
 Chemical: EE
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: EE