26108
Central to pathogenesis , Th2 and Th17 lymphocytes of the adaptive immune system control many aspects of the disease by producing cytokines such as IL - 4 , IL - 5 , IL - 13 , and IL - 17 .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None