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We have identified a novel cellular protein , Bik , that interacts with the cellular survival-promoting proteins , Bcl-2 and Bcl-xL , as well as the viral survival-promoting proteins , Epstein Barr virus -BHRF1 and adenovirus E1B-19 kDa .
 protein: Bik; protein: Bcl-xL; protein: cellular protein; protein: Bcl-2; protein: Epstein Barr virus -BHRF1; protein: cellular survival-promoting proteins; protein: adenovirus E1B-19 kDa; protein: viral survival-promoting proteins
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: Bik; protein: Bcl-xL; protein: cellular protein; protein: Bcl-2; protein: Epstein Barr virus -BHRF1; protein: cellular survival-promoting proteins; protein: adenovirus E1B-19 kDa; protein: viral survival-promoting proteins