1713
A decreased number of calcitriol ( 1,25(OH)2D3 ) receptors has been observed in parathyroid glands of uremic animals .
 ( protein: calcitriol ( 1,25(OH)2D3 ) receptors, 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:
 ( protein: calcitriol ( 1,25(OH)2D3 ) receptors, None) 