14982
A 73 kDa protein was identified by this analysis: this protein is highly enriched in cell lines of B lymphoid origin as compared to pancreatic beta-cells and fibroblast cells .
 ( cell line: cell lines of B lymphoid origin, None) , ( protein: 73 kDa protein, None) , ( cell type: fibroblast cells, None) , ( cell type: pancreatic beta-cells, 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 line: cell lines of B lymphoid origin, None) , ( protein: 73 kDa protein, None) , ( cell type: fibroblast cells, None) , ( cell type: pancreatic beta-cells, None) 