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In this report , we present an innovative in vitro HTS assay using CD4 ( + ) T cells from Foxp3 - GFP transgenic mice that specifically express the GFP signal in Foxp3 ( + ) Treg cells detectable by FACS analysis in a high throughput manner .
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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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