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Native human erythrocyte NDP kinase protein inhibited the induction of erythroid differentiation of HEL , KU812 and K562 cells , but not the induction of monocytic or granulocytic differentiation of HL-60 , U937 and HEL/S cells .
 protein: Native human erythrocyte NDP kinase protein; cell line: HEL/S; cell line: HL-60; cell line: U937
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: Native human erythrocyte NDP kinase protein, HEL/S, HL-60, U937 
Answer:
 protein: Native human erythrocyte NDP kinase protein; cell line: HEL/S; cell line: HL-60; cell line: U937