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The activation of signal transducer and activator of transcription (STAT) proteins in a primary TCR -mediated activation of T cells have been explored.
 cell type: T cells; protein: transcription (STAT) proteins; protein: TCR
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 cell type: T cells; protein: transcription (STAT) proteins; protein: TCR