The bag is designed to be filled to {HEAD ~ a fraction} of its maximum capacity so that the cell suspension has {TAIL ~ a very thin cross section} 
The bag is designed to be filled to { HEAD ~ a fraction } of its maximum capacity so that the cell suspension has { TAIL ~ a very thin cross section }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL