9031
Our findings suggest that non-clonal progenitor cells persist in some RARS cases, that erythroid progenitors show mosaicism, and that ringed sideroblasts may be derived from an abnormal clone involved in the pathogenesis of this disease.
 cell type: erythroid progenitors; cell type: RARS; cell type: ringed sideroblasts; cell type: non-clonal progenitor cells
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: erythroid progenitors, RARS, ringed sideroblasts, non-clonal progenitor cells 
Answer:
 cell type: erythroid progenitors; cell type: RARS; cell type: ringed sideroblasts; cell type: non-clonal progenitor cells