23661
However , during characterization of these animals , it became increasingly evident that the enzymes play key roles in the modulation of lipid metabolism itself , and may control the supply of lipids between tissues such as adipose and liver .
 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