6209
Our results indicate that ATRA as well as VD efficiently increases the nuclear abundance of VD receptor ( VDR ) and promotes monocytic differentiation.
 VD receptor, VDR
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 VD receptor, VDR