{HEAD ~ Ions} within a window of m/z of interest are extracted via {TAIL ~ a quadrupole mass filter} 24 and passed to a linear trap 30 
{ HEAD ~ Ions } within a window of m / z of interest are extracted via { TAIL ~ a quadrupole mass filter } 24 and passed to a linear trap 30
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH