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Activation of the TAL1 (or SCL) gene , originally identified through its involvement by a recurrent chromosomal translocation , is the most frequent molecular lesion recognized in T-cell acute lymphoblastic leukemia .
 TAL1 (or SCL) gene, molecular lesion
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 TAL1 (or SCL) gene, molecular lesion