The devices additionally contain a surfactant erosion rate modifier that cooperates with and interacts with polymers for regulating {HEAD ~ the rate} of {TAIL ~ erosion} of the polymers 
of
The devices additionally contain a surfactant erosion rate modifier that cooperates with and interacts with polymers for regulating { HEAD ~ the rate } of { TAIL ~ erosion } of the polymers
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH