7079
These mutations were introduced in the tax gene of the ACH functional molecular clone of HTLV-1 , and virus produced from the mutant ACH clones was examined for the ability to replicate and immortalize primary human lymphocytes .
 ( DNA: ACH functional molecular clone, None) , ( DNA: mutant ACH clones, None) , ( DNA: tax gene, None) , ( cell type: primary human lymphocytes, 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:
 ( DNA: ACH functional molecular clone, None) , ( DNA: mutant ACH clones, None) , ( DNA: tax gene, None) , ( cell type: primary human lymphocytes, None) 