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In order to further understand the mechanisms directing the expression of these key regulators of hematopoiesis , we initiated a study investigating the transcription factors activating the expression of the granulocyte-macrophage colony-stimulating factor ( GM-CSF ) receptor alpha gene .
 protein: transcription factors; protein: GM-CSF; protein: granulocyte-macrophage colony-stimulating factor; DNA: granulocyte-macrophage colony-stimulating factor ( GM-CSF ) receptor alpha gene
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: GM-CSF; protein: granulocyte-macrophage colony-stimulating factor; DNA: granulocyte-macrophage colony-stimulating factor ( GM-CSF ) receptor alpha gene