14780
Peak accumulation curves were observed for F2 aliphatics and aromatics and F3a aromatics , likely as a result of changes in exposure concentration over the test duration via loss or a decrease in the bioavailable fraction .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None