{HEAD ~ This filter device} is used, for example, for the removal of proteins from {TAIL ~ blood} 
{ HEAD ~ This filter device } is used , for example , for the removal of proteins from { TAIL ~ blood }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL