{HEAD ~ The absence} of {TAIL ~ a solid phase separation step} eliminates false positive results and increases throughput 
of
{ HEAD ~ The absence } of { TAIL ~ a solid phase separation step } eliminates false positive results and increases throughput
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH