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SCL and related hemopoietic helix-loop-helix transcription factors .
 protein: transcription factors; protein: helix-loop-helix; protein: SCL; protein: hemopoietic helix-loop-helix transcription factors
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: transcription factors; protein: helix-loop-helix; protein: SCL; protein: hemopoietic helix-loop-helix transcription factors