Identification of metabolite peaks was based on mass accuracy and isomeric species were assigned based on {HEAD ~ diagnostic fragment ions} present during tandem mass spectrometry for many of {TAIL ~ the identified metabolite peaks} 
Identification of metabolite peaks was based on mass accuracy and isomeric species were assigned based on { HEAD ~ diagnostic fragment ions } present during tandem mass spectrometry for many of { TAIL ~ the identified metabolite peaks }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL