4615
Normal human bronchial / tracheal epithelial ( NHBE ) cells were used as an in vitro model with FasR siRNA , FasR agonistic antibody CH11 , and FasR antagonistic antibody ZB4 as investigative tools .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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