12536
This result suggests that expression of Aldh1 protein is negatively regulated by Hox11 and that abnormal expression of Aldh1 in Hox11 null mice may cause loss of splenic precursor cells by aberrant retinoic acid metabolism
 ( cell type: splenic precursor cells, None) , ( protein: Hox11, None) , ( protein: Aldh1, None) , ( protein: Hox11, None) , ( protein: Aldh1, None) , ( protein: Aldh1 protein, 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: splenic precursor cells, None) , ( protein: Hox11, None) , ( protein: Aldh1, None) , ( protein: Hox11, None) , ( protein: Aldh1, None) , ( protein: Aldh1 protein, None) 