Filtration of {TAIL ~ blood} in {HEAD ~ the aorta} will usually be conducted while the heart is functioning normally, i.e., without the use of cardiopulmonary bypass 
Filtration of { TAIL ~ blood } in { HEAD ~ the aorta } will usually be conducted while the heart is functioning normally , i.e. , without the use of cardiopulmonary bypass
OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH