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Presently , we made chain pair switch , chimeric , and site mutant gamma delta TCRs and transfected them into TCR - mutant Jurkat T cells to examine the effects of changing the TCR gamma junctional region sequences on reactivity to prenyl pyrophosphate Ags .
 GENE: mutant gamma delta TCRs; GENE: TCR gamma junctional region sequences; GENE: prenyl pyrophosphate Ags
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: mutant gamma delta TCRs; GENE: TCR gamma junctional region sequences; GENE: prenyl pyrophosphate Ags