The physician can also inject a medicament directly into {TAIL ~ the bolus} with {HEAD ~ an injection needle}  
The physician can also inject a medicament directly into { TAIL ~ the bolus } with { HEAD ~ an injection needle }
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH