21409
After 21days , the rats from the VG and CG cohorts were treated with 30mg / kg of gossypol by intraperitoneal injection , whereas the rats from the CO group received corn oil .
 Chemical: gossypol
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: gossypol 
Answer:
 Chemical: gossypol