23756
Our results showed that galangin down - regulates mast cell - derived allergic inflammatory reactions by blocking histamine release and expression of pro - inflammatory cytokines .
 Chemical: galangin; Chemical: histamine
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: galangin, histamine 
Answer:
 Chemical: galangin; Chemical: histamine