8229
Hormones such as 1 alpha, 25-dihydroxy vitamin D3 ( D3 ), all-trans retinoic acid , and 9-cis retinoic acid stimulate differentiation of myeloid progenitor cells via their interaction with specific hormone receptors .
 ( protein: hormone receptors, None) , ( cell type: myeloid progenitor 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:
 ( protein: hormone receptors, None) , ( cell type: myeloid progenitor cells, None) 