4879
We observed that the RXR alpha expression increased during myelomonocytic differentiation , since the highest levels were found in AML samples and in myelomonocytic cell lines having the highest amounts of monocytic precursors .
 ( protein: RXR alpha, None) , ( cell type: monocytic precursors, None) , ( cell line: myelomonocytic cell lines, 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: RXR alpha, None) , ( cell type: monocytic precursors, None) , ( cell line: myelomonocytic cell lines, None) 