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An active v-abl protein tyrosine kinase blocks immunoglobulin light-chain gene rearrangement .
 v-abl protein tyrosine kinase, immunoglobulin light-chain gene
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:
 v-abl protein tyrosine kinase, immunoglobulin light-chain gene