{TAIL ~ A drop} in the cassette sealing bladder pressure can compromise {HEAD ~ the seal} of the dialysis pumping cassette relative to the dialysis instrument 
{ TAIL ~ A drop } in the cassette sealing bladder pressure can compromise { HEAD ~ the seal } of the dialysis pumping cassette relative to the dialysis instrument
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH