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A member of the src gene family , the lymphocyte-specific protein tyrosine kinase , p56lck , has been implicated in IL-2 production .
 protein: IL-2; DNA: src gene family; protein: p56lck; protein: lymphocyte-specific protein tyrosine kinase
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 protein: IL-2; DNA: src gene family; protein: p56lck; protein: lymphocyte-specific protein tyrosine kinase