2173
Lymphoid cells transformed by Abelson murine leukemia virus have provided one of the classic models for study of early B-cell development and immunoglobulin rearrangement .
 ( cell type: Lymphoid cells, None) , ( protein: immunoglobulin, 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:
 ( cell type: Lymphoid cells, None) , ( protein: immunoglobulin, None) 