4372
These results suggest the possible use of combinations between IFNs and retinoic acid in the cyto-differentiating treatment of APL patients .
 protein: IFNs
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: IFNs 
Answer:
 protein: IFNs