1649
Furthermore, we demonstrate that in myeloid and B cell extracts , PU.1 forms a novel, specific, more slowly migrating complex ( PU-SF ) when binding the GM-CSF receptor alpha promoter PU.1 site .
 protein: GM-CSF receptor alpha; DNA: PU.1 site; protein: PU.1; protein: PU-SF; protein: GM-CSF; DNA: GM-CSF receptor alpha promoter; protein: PU.1
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: GM-CSF receptor alpha; DNA: PU.1 site; protein: PU.1; protein: PU-SF; protein: GM-CSF; DNA: GM-CSF receptor alpha promoter; protein: PU.1