6837
Tryptamine , phenylethylamine and histamine ( with the single exception of a sample stored for 70 days ) were not detected in pressure - treated samples kept at 3 . 5 degrees C .
 Chemical: Tryptamine; Chemical: phenylethylamine; Chemical: histamine
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: Tryptamine; Chemical: phenylethylamine; Chemical: histamine