5941
Furthermore, expression of physiological levels of Bcl-x protected B cells from Fas-mediated apoptosis in the absence of NF-kappaB signaling .
 cell type: Bcl-x protected B cells; protein: Bcl-x; protein: NF-kappaB; cell type: B cells
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: Bcl-x protected B cells, Bcl-x, NF-kappaB, B cells 
Answer:
 cell type: Bcl-x protected B cells; protein: Bcl-x; protein: NF-kappaB; cell type: B cells