19375
Since its introduction as a therapeutic modality almost 100 years ago , insulin therapy has undergone remarkable changes in purity and ability to provide more physiologic control of blood glucose levels .
 Chemical: glucose
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: glucose 
Answer:
 Chemical: glucose