25805
Genome - wide association studies are also adding to the wealth of knowledge surrounding the androgen receptor , and with this knowledge comes the ability to design new drug therapies directed toward eradication of this disease .
 Chemical: androgen
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: androgen 
Answer:
 Chemical: androgen