7912
This study validates oxidized lipid products , noticeably isoprostanes are measurable in marine fish muscle and should be considered when assessing oxidative stress especially due to exogenous factors .
 Chemical: isoprostanes
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: isoprostanes 
Answer:
 Chemical: isoprostanes