4234
The proportion of CD40 cells (26%) in a resting B-cell preparation from hepatitis B patients decreased to zero after a 5-day culture with sequence I , but IgG levels in the culture supernatant increased.
 ( cell line: resting B-cell preparation, None) , ( cell line: CD40 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: resting B-cell preparation, None) , ( cell line: CD40 cells, None) 