8238
When HL60 cells or normal myeloid progenitor cells were exposed to exogenous E1 they became more sensitive to the differentiation-inducing effects of D3 .
 ( cell type: myeloid progenitor cells, None) , ( cell line: HL60 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: myeloid progenitor cells, None) , ( cell line: HL60 cells, None) 