12715
Expression of transcription factors during sodium phenylacetate induced erythroid differentiation in K562 cells .
 cell line: K562 cells; protein: transcription factors
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: K562 cells, transcription factors 
Answer:
 cell line: K562 cells; protein: transcription factors