8179
Moreover, several transgenic mice developed acute leukemia , classified as T- ALL based on the surface marker analysis and DNA rearrangements , suggesting that an additional event is required for malignant transformation of lymphoid cells expressing E2A-HLF .
 ( protein: E2A-HLF, None) , ( cell type: lymphoid 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: E2A-HLF, None) , ( cell type: lymphoid cells, None) 