13994
The characterization of Pax-5 -deficient pro-B cells demonstrated an important role of BSAP in the regulation of the CD19 , mb-1 ( Ig alpha ) and N-myc genes as well as in the developmental pathway controlling VH-to-DHJH recombination at the immunoglobulin heavy-chain ( IgH ) locus .
 ( protein: mb-1, None) , ( protein: Ig alpha, None) , ( protein: IgH, None) , ( protein: immunoglobulin heavy-chain ( IgH ) locus, None) , ( protein: Pax-5, None) , ( protein: immunoglobulin heavy-chain, None) , ( protein: CD19, None) , ( protein: BSAP, None) , ( cell type: Pax-5 -deficient pro-B cells, None) , ( DNA: N-myc genes, 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: mb-1, None) , ( protein: Ig alpha, None) , ( protein: IgH, None) , ( protein: immunoglobulin heavy-chain ( IgH ) locus, None) , ( protein: Pax-5, None) , ( protein: immunoglobulin heavy-chain, None) , ( protein: CD19, None) , ( protein: BSAP, None) , ( cell type: Pax-5 -deficient pro-B cells, None) , ( DNA: N-myc genes, None) 