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Here, we tested whether the potency of one class of compounds, 20-epi analogues , to induce myeloid cell differentiation, is because of direct molecular effects on vitamin D receptor ( VDR ).
 protein: VDR; protein: vitamin D receptor
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: VDR, vitamin D receptor 
Answer:
 protein: VDR; protein: vitamin D receptor