7193
The hormone delayed terminal differentiation into erythrocytes , which was assayed by morphology, hemoglobin accumulation , and the expression of genes characteristic for immature cells .
 ( cell type: immature cells, None) , ( protein: hemoglobin, None) , ( cell type: erythrocytes, 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: immature cells, None) , ( protein: hemoglobin, None) , ( cell type: erythrocytes, None) 