{HEAD ~ This matter} includes, but is not limited to, atheromatous fragments, fat, {TAIL ~ platelets}, fibrin, clots, or gaseous material 
includes
{ HEAD ~ This matter } includes , but is not limited to , atheromatous fragments , fat , { TAIL ~ platelets } , fibrin , clots , or gaseous material
HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH