79
OBP - 401 infection induced detectable GFP expression in CAR - expressing tumor cells , but not in CAR - negative tumor cells , nor in CAR - positive normal fibroblasts , 24 h after infection .
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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:
 None