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From this and other findings the picture emerges that there are at least three categories of factors which mediate cell-type-specific transcription in B lymphocytes : (a) cell-specific factors such as Oct-2A and Oct-2B that are not expressed in most other cell types: (b) ubiquitous factors such as NF-kappa B that are constitutively active in B cells but are sequestered in an inactive form in other cells; (c) ubiquitously active factors , exemplified by the one binding to the E3 sequence motif .
 protein: Oct-2B; cell type: B lymphocytes; protein: NF-kappa B; protein: ubiquitous factors; cell type: B cells; protein: ubiquitously active factors; protein: cell-specific factors; DNA: E3 sequence motif; protein: Oct-2A; cell type: lymphocytes
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: Oct-2B; cell type: B lymphocytes; protein: NF-kappa B; protein: ubiquitous factors; cell type: B cells; protein: ubiquitously active factors; protein: cell-specific factors; DNA: E3 sequence motif; protein: Oct-2A; cell type: lymphocytes