16919
We hypothesized that Bauer alkamides 8 , 10 , and 11 and ketone 24 were absorbed similarly either as pure compounds or from Echinacea sanguinea and Echinacea pallida ethanol extracts , and that these Echinacea extracts could inhibit the P - glycoprotein transporter in Caco - 2 human intestinal epithelial cells .
 Chemical: alkamides; Chemical: ketone; 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: alkamides; Chemical: ketone; Chemical: ethanol