19054
We observed changes in FA composition that predominantly involved increases in FA methyl esters ( FAMEs ) , mono - and poly - unsaturated FA ( MUFA and PUFA ) and a decrease in n - 3 / n - 6 PUFA ratio by both PFOA and PFOS .
 Chemical: FA methyl esters; Chemical: FAMEs; Chemical: mono - and poly - unsaturated FA; Chemical: MUFA; Chemical: PUFA; Chemical: PUFA; Chemical: PFOA; Chemical: PFOS
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: FA methyl esters; Chemical: FAMEs; Chemical: mono - and poly - unsaturated FA; Chemical: MUFA; Chemical: PUFA; Chemical: PUFA; Chemical: PFOA; Chemical: PFOS