21661
The antiulcerogenic activity was evaluated by the HCl / ethanol method , which causes injury to the gastric mucosa .
 Chemical: HCl; Chemical: ethanol
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: HCl; Chemical: ethanol