1132
Human RAR alpha expression was unchanged in H9 and CEM cells , and elevated in U937 cells , after PMA stimulation.
 cell line: H9; cell line: CEM cells; cell line: U937 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: H9, CEM cells, U937 cells 
Answer:
 cell line: H9; cell line: CEM cells; cell line: U937 cells