The cylinder comprises {TAIL ~ an open cylindrical passage} and includes a needle attached in {HEAD ~ a conventional manner} at the proximal end thereof 
The cylinder comprises { TAIL ~ an open cylindrical passage } and includes a needle attached in { HEAD ~ a conventional manner } at the proximal end thereof
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH