Following this, {HEAD ~ the sample} is tested for {TAIL ~ the presence} or absence of at least one specific nucleic acid sequence using nucleic acid hybridization methods and a labeled nucleic acid probe 
is tested for
Following this , { HEAD ~ the sample } is tested for { TAIL ~ the presence } or absence of at least one specific nucleic acid sequence using nucleic acid hybridization methods and a labeled nucleic acid probe
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH