3526
The next day , we assessed methacholine airway hyperreactivity ( AHR ) ; bronchoalveolar lavage differential cell count ; histopathology and total serum IgE ; and auricular lymphocyte subpopulations and release of interleukin ( IL ) - 2 , IL - 4 , IL - 10 , IL - 13 , and gamma interferon by these lymphocytes .
 Chemical: methacholine
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: methacholine