9996
Because cell cycle analysis showed that in PBL from chemically- exposed individuals , between 20-50% of cells were accumulated at the S-G2/M boundaries.
 ( cell type: PBL, 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: PBL, None) 