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