3048
Using daily mu CT scans of murine femora and tibiae during perinatal development , we show that a temporary decrease in tissue mineral density ( TMD ) is evident in mice .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None