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