14724
These results demonstrate that multiple X1 box-specific DNA-binding activities exist in all lymphoid cells , but the presence of an actively binding RFX species correlates with class II transcription .
 cell type: lymphoid cells; 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: lymphoid cells, RFX 
Answer:
 cell type: lymphoid cells; protein: RFX