15198
The production of cytokines in bronchoalveolar lavage fluid and serum was measured using enzyme - labeled immunosorbent assay kits , and the expression levels of transforming growth factor - beta 1 and vascular endothelial growth factor were detected by immunohistochemistry .
 None
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:  
Answer:
 None