14346
A new approach to facilitate immobilization and affinity purification of recombinant proteins and selected human B lymphocytes has been developed.
 ( protein: recombinant proteins, None) , ( cell type: human B lymphocytes, 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: recombinant proteins, None) , ( cell type: human B lymphocytes, None) 