The microencapsulated vaccine results in {HEAD ~ a constant, pulsed release} of the vaccine into {TAIL ~ the animal} and eliminates the need for repetitive injections 
The microencapsulated vaccine results in { HEAD ~ a constant , pulsed release } of the vaccine into { TAIL ~ the animal } and eliminates the need for repetitive injections
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH