4823
Finally, we show that the B cell coactivator OBF-1/Bob1/OCA-B is only expressed in B cells and not in myeloid cells , and that OBF-1/Bob1/OCA-B can transactivate the PU.1 promoter in HeLa and myeloid cells .
 cell line: HeLa; protein: OBF-1/Bob1/OCA-B; protein: OBF-1/Bob1/OCA-B; protein: PU.1; DNA: PU.1 promoter; cell type: B cells; protein: coactivator; cell type: myeloid cells; cell type: myeloid 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: HeLa, OBF-1/Bob1/OCA-B, OBF-1/Bob1/OCA-B, PU.1, PU.1 promoter, B cells, coactivator, myeloid cells, myeloid cells 
Answer:
 cell line: HeLa; protein: OBF-1/Bob1/OCA-B; protein: OBF-1/Bob1/OCA-B; protein: PU.1; DNA: PU.1 promoter; cell type: B cells; protein: coactivator; cell type: myeloid cells; cell type: myeloid cells