{HEAD ~ These illumination sources} are optionally integrated into {TAIL ~ laser scanners}, fluorescence microplate readers, standard or minifluorometers, or chromatographic detectors 
are optionally integrated into
{ HEAD ~ These illumination sources } are optionally integrated into { TAIL ~ laser scanners } , fluorescence microplate readers , standard or minifluorometers , or chromatographic detectors
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH