19807
In conclusion , we have identified for the first time a nonsteroidal agent that selectively activates beta 1 - containing BK channels by targeting the steroid - sensing site in BK beta 1 , rendering vasodilation .
 steroid
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 steroid