9683
Most of the S . thermophilus isolates formed low amounts of histamine ( 1 - 50 mg / L ) from histidine .
 Chemical: histamine; Chemical: histidine
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: histamine; Chemical: histidine