14571
Different doses of a partially purified extract of B . hieronymi were assayed on carrageenan - induced and serotonine - induced rat paw edema , as well as in cotton pellet granuloma model .
 serotonine
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 serotonine