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