5320
Most recently , dendritic cells ( DC ) were identified for their potential to enhance influenza - induced immunopathology in mice lacking CB ( 1 ) and CB ( 2 ) ( CB ( 1 ) ( - / - ) CB ( 2 ) ( - / - ) ) .
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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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