11057
The concentration of the VDR mRNA , corrected for the number of monocytes , was similar among the three genotype groups, as were the other variables examined: serum calcitriol , serum osteocalcin , and vertebral and hip bone density .
 ( cell type: monocytes, None) , ( protein: serum calcitriol, None) , ( RNA: VDR mRNA, None) , ( protein: serum osteocalcin, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( cell type: monocytes, None) , ( protein: serum calcitriol, None) , ( RNA: VDR mRNA, None) , ( protein: serum osteocalcin, None) 