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