7022
Furthermore, PML and pRb 105 were co-immunoprecipitated in cellular lysates derived from erythroid precursors indicating that this functional interaction may have a biochemical basis.
 ( cell type: erythroid precursors, None) , ( protein: PML, None) , ( protein: pRb 105, 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: erythroid precursors, None) , ( protein: PML, None) , ( protein: pRb 105, None) 