13207
RNA extracted from uninduced, ATRA -induced CD38+ cells , and vitamin D3 treated maturing cell cultures were amplified using the degenerate primers .
 ( cell type: CD38+ cells, None) , ( cell line: vitamin D3 treated maturing cell cultures, None) , ( cell line: ATRA -induced CD38+ 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: CD38+ cells, None) , ( cell line: vitamin D3 treated maturing cell cultures, None) , ( cell line: ATRA -induced CD38+ cells, None) 