5327
Collectively , these studies suggest that Delta ( 9 ) - THC potently suppresses myeloid cell immune function , in a manner involving CB ( 1 ) and / or CB ( 2 ) , thereby impairing immune responses to influenza infection .
 Chemical: Delta ( 9 ) - THC
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: Delta ( 9 ) - THC