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Recently we reported that all-trans-retinoic acid ( ATRA ) is a potent and highly specific inducer of CD38 expression in human promyelocytic leukemia cells .
 protein: CD38; cell type: human promyelocytic leukemia 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: CD38, human promyelocytic leukemia cells 
Answer:
 protein: CD38; cell type: human promyelocytic leukemia cells