1340
In transient transfection assays , Bik promotes cell death in a manner similar to the death-promoting members of the Bcl-2 family , Bax and Bak .
 protein: Bak; protein: death-promoting members; protein: Bcl-2; protein: Bik; protein: Bcl-2 family; protein: Bax
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: Bak; protein: death-promoting members; protein: Bcl-2; protein: Bik; protein: Bcl-2 family; protein: Bax