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In contrast, in a number of multiple myeloma cell lines , representing differentiated, plasma cell-like B cells , PU.1 DNA binding activity , mRNA expression , and Pu box -dependent transactivation were absent or detectable at a very low level.
 cell line: multiple myeloma cell lines; protein: PU.1; DNA: Pu box; cell type: differentiated, plasma cell-like B cells
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:
 cell line: multiple myeloma cell lines; protein: PU.1; DNA: Pu box; cell type: differentiated, plasma cell-like B cells