5395
The objective of this study was to develop U937 transfectants expressing antisense VDR mRNA , and to use these to examine the role of 1,25(OH)2D3 -VDR interaction in this lineage.
 cell line: U937; protein: -VDR; RNA: VDR mRNA
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: U937, -VDR, VDR mRNA 
Answer:
 cell line: U937; protein: -VDR; RNA: VDR mRNA