2855
Interestingly , cancellous bone volume was not different between NPY ( - / - ) ob / ob and ob / ob , suggesting that NPY is not influencing the adrenergic axis .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None