20665
In this study , exendin - 4 , a glucagon - like peptide - 1 analog improved islet transplantation outcome by increasing the survival of diabetic recipient mice from 58 % to 100 % .
 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