1644
The GM-CSF receptor alpha promoter contains an important functional site between positions -53 and -41 as identified by deletion analysis of reporter constructs .
 protein: GM-CSF receptor alpha; DNA: reporter constructs; DNA: GM-CSF receptor alpha promoter; protein: GM-CSF
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: reporter constructs; DNA: GM-CSF receptor alpha promoter; protein: GM-CSF