4143
At the same time , the number of heparan sulphate anionic sites and the total anionic site surface ( number of anionic sites x mean anionic site surface ) in the lamina rara externa of the glomerular basement membrane was reduced by 19 % ( p < 0 . 021 ) and by 26 % ( p < 0 . 02 ) , respectively .
 Chemical: heparan sulphate
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities: heparan sulphate 
Answer:
 Chemical: heparan sulphate