4224
To determine the contribution of the cytoplasmic domain of the IL-7 receptor alpha chain ( IL-7R alpha ) to activation of STAT proteins , transfectants of the murine pro-B cell line BAF3 were made that express chimeric receptors consisting of the extracellular domain of human granulocyte colony-stimulating factor receptor ( G-CSF-R ) and the transmembrane and intracellular domains of human IL-7R alpha .
 ( protein: human granulocyte colony-stimulating factor receptor, None) , ( protein: IL-7 receptor alpha chain, None) , ( protein: extracellular domain, None) , ( protein: human IL-7R alpha, None) , ( protein: IL-7R alpha, None) , ( protein: G-CSF-R, None) , ( protein: STAT proteins, None) , ( protein: IL-7, None) , ( protein: cytoplasmic domain, None) , ( protein: chimeric receptors, None) , ( cell line: murine pro-B cell line BAF3, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( protein: human granulocyte colony-stimulating factor receptor, None) , ( protein: IL-7 receptor alpha chain, None) , ( protein: extracellular domain, None) , ( protein: human IL-7R alpha, None) , ( protein: IL-7R alpha, None) , ( protein: G-CSF-R, None) , ( protein: STAT proteins, None) , ( protein: IL-7, None) , ( protein: cytoplasmic domain, None) , ( protein: chimeric receptors, None) , ( cell line: murine pro-B cell line BAF3, None) 