5859
One - week treatment of WT mice with the vitamin D analog RO - 27 - 5646 led to a significant increase in adipose leptin mRNA transcript and serum leptin levels .
 vitamin D, RO - 27 - 5646
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 vitamin D, RO - 27 - 5646