10190
In addition, in vivo footprint analysis showed the putative X and Y boxes to be occupied by transcription factors in wild-type B cells , but not in RFX -deficient B cells .
 cell type: wild-type B cells; cell type: B cells; cell line: RFX -deficient B cells; protein: transcription factors; protein: RFX
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: wild-type B cells, B cells, RFX -deficient B cells, transcription factors, RFX 
Answer:
 cell type: wild-type B cells; cell type: B cells; cell line: RFX -deficient B cells; protein: transcription factors; protein: RFX