15851
Free amino acid concentrations in human plasma samples are generally determined by means of GC or LC after chemical derivatization followed by UV , fluorescent or MS detection of the amino acid derivatives .
 Chemical: amino acid; Chemical: amino acid
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: amino acid; Chemical: amino acid