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Here , we show a simple system for detection and assessment of functional CAR expression in human tumor cells , using the green fluorescent protein ( GFP ) - expressing telomerase - specific replication - competent adenovirus OBP - 401 .
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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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