In addition to the biological sample, {HEAD ~ each sample container} has {TAIL ~ a unique passive RFID tag} 
has
In addition to the biological sample , { HEAD ~ each sample container } has { TAIL ~ a unique passive RFID tag }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL