30502
The results demonstrate that glycerol and urea can retain high steady state flux of Mz across skin membranes at dehydrating conditions , which otherwise would decrease the permeability due to dehydration .
 Chemical: glycerol; Chemical: urea
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: glycerol, urea 
Answer:
 Chemical: glycerol; Chemical: urea