11102
Our data indicate that although PBSC harvests collected after consolidation chemotherapy are contaminated by leukemic cells , the degree of leukemic cell contamination decreases with repeated cycles of chemotherapy.
 ( cell type: PBSC, None) , ( cell type: leukemic 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 type: PBSC, None) , ( cell type: leukemic cells, None) 