4954
Human T-cell leukemia virus type I ( HTLV-I )-infected T-cell lines constitutively produce high levels of interleukin-1alpha ( IL-1alpha ).
 ( cell line: Human T-cell leukemia virus type I ( HTLV-I )-infected T-cell lines, None) , ( protein: IL-1alpha, None) , ( protein: interleukin-1alpha, 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 line: Human T-cell leukemia virus type I ( HTLV-I )-infected T-cell lines, None) , ( protein: IL-1alpha, None) , ( protein: interleukin-1alpha, None) 