1599
Many cytokines activate signal transducer and activation of transcription ( STAT ) transcription factors , which, in turn, activate transcription of inflammatory effector genes.
 protein: signal transducer and activation of transcription ( STAT ) transcription factors; protein: cytokines; protein: STAT
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:
 protein: signal transducer and activation of transcription ( STAT ) transcription factors; protein: cytokines; protein: STAT