1522
Steel factor is one of the growth factors that controls the proliferation and differentiation of hematopoietic cells and SCL , also known as Tcl-5 or Tal-1 , is a transcription factor involved in erythropoiesis.
 protein: Steel factor; protein: growth factors; cell type: hematopoietic cells; protein: transcription factor; protein: Tal-1; protein: SCL; protein: Tcl-5
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: Steel factor, growth factors, hematopoietic cells, transcription factor, Tal-1, SCL, Tcl-5 
Answer:
 protein: Steel factor; protein: growth factors; cell type: hematopoietic cells; protein: transcription factor; protein: Tal-1; protein: SCL; protein: Tcl-5