{TAIL ~ The resulting odd electron metal peptide complex} then fragments to yield {HEAD ~ diagnostic fragment ions} observed in the mass spectrometer 
{ TAIL ~ The resulting odd electron metal peptide complex } then fragments to yield { HEAD ~ diagnostic fragment ions } observed in the mass spectrometer
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH